List of the Paleozoic life of New York (state)

This list of the Paleozoic life of New York contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of New York and are between 538.8 and 252.17 million years of age.

A

• †Acanthoclema
  • †Acanthoclema aspera
  • †Acanthoclema asperum
• †Acanthoclymenia
  • †Acanthoclymenia genundewa
  • †Acanthoclymenia neapolitana
• †Acanthocrinus
  • †Acanthocrinus spinosus

• 

  Fossilized teeth (W) of the Cambrian–Early Ordovician conodont Acanthodus

  †Acanthodus
  • †Acanthodus uncinatus
• †Acanthoparypha – tentative report
• †Acanthoscapha
• †Achatella
  • †Achatella achates
• †Acheilops
  • †Acheilops masonensis
• †Acidiphorus
  • †Acidiphorus whittingtoni

• 

  Illustration of fossils of the Cambrian trilobite Acidiscus

  †Acidiscus
• †Acimetopus
• †Acinophyllum
• †Acinopteria
• †Aclistocrinus
  • †Aclistocrinus capistratus
• †Acodus
  • †Acodus similaris
• †Acrogenia
• †Acrospirifer
  • †Acrospirifer duodenaria
  • †Acrospirifer macrothyris
• †Acrothele
• †Acrotreta
• †Actinoceras
  • †Actinoceras ruedemanni
  • †Actinoceras ruedemonni
  • †Actinoceras vertebratum
• †Actinodesma
  • †Actinodesma erectum
• †Actinophyllum
• †Actinopterella
• †Actinopteria
  • †Actinopteria boydi
  • †Actinopteria boydii
  • †Actinopteria decussata
  • †Actinopteria muricatus
  • †Actinopteria recumbant
  • †Actinopteria subdessucata
• †Actinostromella
  • †Actinostromella vaiverensis
• †Actinoxylon
  • †Actinoxylon banksii
• †Aculeatarbus – type locality for genus
  • †Aculeatarbus depressus – type locality for species

• 

  Fossil of the Silurian-Early Devonian eurypterid ("sea scorpion") Acutiramus

  †Acutiramus
  • †Acutiramus floweri – type locality for species
  • †Acutiramus macrophthalmus
• †Adelphobolbina
  • †Adelphobolbina medialis – type locality for species
• †Aechmina
• †Aechminaria – tentative report
• †Aesopomum
• †Aglaeoglypta
  • †Aglaeoglypta koeneni
  • †Aglaeoglypta maera
• †Aglaoglypta
  • †Aglaoglypta koeneni – type locality for species
  • †Aglaoglypta maera
• †Agoniatites
  • †Agoniatites discoideus
  • †Agoniatites expansus
  • †Agoniatites nodiferus

• 

  Fossil of the Cambrian trilobite Agraulos

  †Agraulos
  • †Agraulos saratogensis
• †Aknisophyllum – type locality for genus
  • †Aknisophyllum consuitum – type locality for species
• †Alaionema
  • †Alaionema crenulatum
• †Alanella
• †Allanella
  • †Allanella tullia
  • †Allanella tullius
• †Allenella
  • †Allenella tullia
  • †Allenella tullius
• †Alleynia
  • †Alleynia americana
• †Allotrioceras
  • †Allotrioceras bifurcatum
• †Allumettoceras
  • †Allumettoceras giganteum
• †Ambocoelia
  • †Ambocoelia gregaria
  • †Ambocoelia praeumbonata
  • †Ambocoelia umbonata
• †Ambonychia
  • †Ambonychia praecursa
• †Ambonychiopsis
  • †Ambonychiopsis curvata
• †Amorphognathus
  • †Amorphognathus tvaerensis
• †Amphicoelia
  • †Amphicoelia orbiculoides
  • †Amphicoelia ordiculoides
• †Amphidoxodendron
  • †Amphidoxodendron dichotomum
• †Amphigenia
  • †Amphigenia curta
  • †Amphigenia elongata
• †Amphilicas
  • †Amphilicas cornutus
• †Amphilichas
  • †Amphilichas minganensis
• †Amphiocoelia
• †Amphissella
  • †Amphissella papillosa – type locality for species
• †Amphistrophia
  • †Amphistrophia striata
• †Amphizona
  • †Amphizona asceta
• †Amplexiphyllum
  • †Amplexiphyllum hamiltoniae
• †Amplexograptus

• 

  Fossils of the Ordovician-Permian bryozoan Amplexopora

  †Amplexopora
  • †Amplexopora minnesotensis
  • †Amplexopora winchelli
• †Amplexus
  • †Amplexus hamiltoniae
• †Analox
• †Anamesocrinus
  • †Anamesocrinus lutheri
  • †Anamesocrinus spinobrachiatus – type locality for species
• †Anastrophia
  • †Anastrophia brevirostris
  • †Anastrophia interplicata
  • †Anastrophia verneuili
• †Anazyga
  • †Anazyga recurvirostra
• †Anchiopsis
  • †Anchiopsis anchiops
• †Ancillotoechia
  • †Ancillotoechia obtusiplicata
• †Ancistrorhyncha
• †Ancyrocrinus
  • †Ancyrocrinus bulbosus
• †Aneurophyton
  • †Aneurophyton germanicum
  • †Aneurophyton hallii
  • †Aneurophyton rachides
• †Aneurospora
  • †Aneurospora heterodontus – or unidentified comparable form
  • †Aneurospora semizonalis
• †Anisotechnophorus
  • †Anisotechnophorus nuculitiformis – type locality for species
• †Annoceras
  • †Annoceras costatum
  • †Annoceras multicameratum
• †Anomalocystites
  • †Anomalocystites coronatus
• †Anoplia
  • †Anoplia nucleata
• †Anoplotheca
• †Anostylostroma
• †Anrangeroceras
  • †Anrangeroceras repens
  • †Anrangeroceras whitehallense
• †Antholites
• †Aorocrinus
  • †Aorocrinus formosus
• †Aparchites
  • †Aparchites minutissimus

• 

  Restoration of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras feeding on an Aphetoceras, while a quartet of Cyclostomiceras swim by

  †Aphetoceras
  • †Aphetoceras attenuatum
  • †Aphetoceras farnsworthi
  • †Aphetoceras ruedemanni
• †Aphyllopteris
  • †Aphyllopteris delwarensis
• †Aphyllum
  • †Aphyllum fascicularium
• †Apianurus
  • †Apianurus narrawayi
• †Apiculiretusispora
  • †Apiculiretusispora brandtii
• †Apiocystites
  • †Apiocystites elegans
• †Apsidognathus
  • †Apsidognathus tuberculatus
• †Arachnoxylon
  • †Arachnoxylon kopfi
• †Archaeacarus – type locality for genus
  • †Archaeacarus dubinini – type locality for species

• 

  Life restoration of the Late Devonian-Carboniferous tree Archaeopteris with insets detailing its anatomy

  †Archaeopteris
  • †Archaeopteris halliana
  • †Archaeopteris hibernica
  • †Archaeopteris macilenta
  • †Archaeopteris obtusa
  • †Archaeopteris sphenophyllifolia
• †Archaeosigillaria
  • †Archaeosigillaria primaeva
  • †Archaeosigillaria vanuxemi
  • †Archaeosigillaria vanuxemii
• †Archegonaspis
• †Archinacella
  • †Archinacella deformata
  • †Archinacella magna – type locality for species
  • †Archinacella parva – type locality for species
  • †Archinacella proprius
  • †Archinacella pulaskiensis
• †Archoceras – tentative report

• 

  Fossil of the Silurian trilobite Arctinurus

  †Arctinurus
  • †Arctinurus boltoni
  • †Arctinurus nereus
• Argyrotheca
  • †Argyrotheca cuneata
• †Arjamannia – tentative report
• †Arthracantha
  • †Arthracantha ithacensis
• †Arthroacantha
  • †Arthroacantha carpenteri
• †Arthroclema
• †Arthrophycus
  • †Arthrophycus alleganiensis
  • †Arthrophycus alleghaniensis
• †Arthrostylus
  • †Arthrostylus tenius
• †Asaphocinus
• †Asaphocrinus
  • †Asaphocrinus ornatus

• 

  Fossil of the Early-Middle Ordovician trilobite Asaphus

  †Asaphus
  • †Asaphus alpha
  • †Asaphus beta
  • †Asaphus gamma
• †Ascograptus
• †Asinomphalus
  • †Asinomphalus antiqua
• †Asperconella
  • †Asperconella gloriae – type locality for species
  • †Asperconella troyensis
• †Aspidocrinus
• †Asteropteris
  • †Asteropteris kopfi
• †Astraeospongium
• †Atactotoechus
  • †Atactotoechus acritus
  • †Atactotoechus kayi
• †Atalacrinus
  • †Atalacrinus arctus
• †Atelelasma
  • †Atelelasma multicosta
• †Ateleocystites
  • †Ateleocystites balanoides
• †Atelestrocrinus
• †Athabaskiella
• †Athroacantha
• †Athyris
  • †Athyris angelica
  • †Athyris cora
  • †Athyris polita
  • †Athyris spiriferiodes
  • †Athyris spiriferoides
• †Atlanticocoelia
  • †Atlanticocoelia acutiplicata
• †Atopostroma
• †Atops
• †Atractocrinus
  • †Atractocrinus kopfi
• †Atribonium
  • †Atribonium halli
• †Atrypa
  • †Atrypa gibbosa
  • †Atrypa reticularis
  • †Atrypa rugosa
• †Atrypina
  • †Atrypina diparilis
  • †Atrypina disparilis
  • †Atrypina rugosa

• 

  Life restoration of the Middle Devonian arachnid Attercopus

  †Attercopus
  • †Attercopus fimbriunguis
  • †Attercopus fimbriungus
• †Aulacognathus
  • †Aulacognathus latus
• †Aulatornoceras
  • †Aulatornoceras auris
  • †Aulatornoceras eifliense
  • †Aulatornoceras paucistriatum
  • †Aulatornoceras rhysum
• †Aulocystis
  • †Aulocystis commensalis
  • †Aulocystis cooperi
  • †Aulocystis dichotoma
  • †Aulocystis jacksoni

• 

  Fossil of the Late Ordovician-Permian tabulate coral Aulopora

  †Aulopora
  • †Aulopora microbuccinata
  • †Aulopora schohariae
  • †Aulopora serpens
• †Auroraspora – or unidentified comparable form
  • †Auroraspora macromanifestus
• Avicula – tentative report
• †Aviculopecten
  • †Aviculopecten ornatus

B

• †Bactrites
• †Bactrocrinites
  • †Bactrocrinites fieldi
• †Bactrotheca – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Bactrotheca emmonsi
• Bairdia
  • †Bairdia summacuminata
• †Balbiniconcha
  • †Balbiniconcha hebe
• †Baltagnostus
• †Balticopora
  • †Balticopora tenuimurale
• †Baltoceras
  • †Baltoceras pusillum – tentative report
• †Barinophyton
  • †Barinophyton citrulliforme
• †Barrandeoceras
  • †Barrandeoceras natator
• †Barrandeophyllum
  • †Barrandeophyllum reimanni
  • †Barrandeophyllum simplex
• †Barroisella
  • †Barroisella campbelli – or unidentified comparable form
• †Barynema
  • †Barynema lirata
  • †Barynema multilirata
• †Basidechenella
  • †Basidechenella rowi
• †Basilicus
  • †Basilicus barrandi
  • †Basilicus whittingtoni
• †Bassleridiscus – type locality for genus
  • †Bassleridiscus mohawkensis – type locality for species
• †Bassleroceras
  • †Bassleroceras beekmanense
  • †Bassleroceras champlainense – type locality for species
  • †Bassleroceras kirbyi
  • †Bassleroceras microscopium
  • †Bassleroceras perseus
  • †Bassleroceras smithbasinense – type locality for species
  • †Bassleroceras spissiseptum
  • †Bassleroceras triangulum – type locality for species
  • †Bassleroceras vassarina – type locality for species

• 

  Illustration of fossils of the Cambrian trilobite Bathydiscus

  †Bathydiscus
• †Bathyrellus
  • †Bathyrellus brevispinus
• †Bathyurellus
  • †Bathyurellus platypus
• †Bathyuriscidella
• †Bathyuriscus
• †Bathyurus
  • †Bathyurus extans
  • †Bathyurus longispinus
• †Batostoma
  • †Batostoma campensis
  • †Batostoma chazyensis
  • †Batostoma lanensis
  • †Batostoma sheldonensis
• †Batostomella
  • †Batostomella granulifera
• †Beachia
• †Beecherella

• 

  Fossil of the Middle Devonian trilobite Bellacartwrightia

  †Bellacartwrightia
  • †Bellacartwrightia calliteles
  • †Bellacartwrightia phyllocaudata
• †Bellefontia
  • †Bellefontia gyracantha
• †Bellerophon
  • †Bellerophon helena
  • †Bellerophon pelops
  • †Bellerophon shelbiensis – type locality for species
• †Belodina
• †Bembexia
  • †Bembexia insolita – type locality for species
• †Benthamaspis
  • †Benthamaspis striata – or unidentified comparable form
• †Benthanyphyllum
• †Bergstroemognathus
  • †Bergstroemognathus extensus
• †Berounella
• †Bertiella
• †Bethanyphyllum
  • †Bethanyphyllum robustum
  • †Bethanyphyllum robustus
• †Beyrichia
  • †Beyrichia lakemontensis – or unidentified related form
  • †Beyrichia veronica
• †Bicia
• †Bideirella
  • †Bideirella reticulata
• †Bieberiana
  • †Bieberiana gowandense – type locality for species
• †Billingsestraea
  • †Billingsestraea varneuili
• †Bilobia
  • †Bilobia pisum
• †Biornatispora
  • †Biornatispora dentata
  • †Biornatispora pseudospinosa
• †Birdsallella
  • †Birdsallella catena – type locality for species
  • †Birdsallella devonica
• †Blastoidocrinus
  • †Blastoidocrinus carchariaedens
  • †Blastoidocrinus expansa
• †Blotherophyllum
• †Blothrophyllum
  • †Blothrophyllum decorticatum
  • †Blothrophyllum promiseum
  • †Blothrophyllum promissum
• †Bolaspidella
• †Bolbocephalus
• †Bolboparia

• 

  Fossil of the Ordovician echinoderm Bolboporites

  †Bolboporites
  • †Bolboporites americanus
• †Bollia
  • †Bollia hindei
• †Bonnia
• †Botryllopora
  • †Botryllopora socialis
• †Botryocrinus
  • †Botryocrinus reimanni
• †Botsfordia
  • †Botsfordia caelata
• †Boucotinskia
  • †Boucotinskia sulcata
  • †Boucotinskia sulcatus
• †Bowmania
  • †Bowmania pennsylvanica – or unidentified comparable form
• †Brachiocrinus
  • †Brachiocrinus nodosarius
• †Brachyopterus
• †Brachyprion
• †Breenops
  • †Breenops boothi
• †Breviphrentis
  • †Breviphrentis roemeri
  • †Breviphrentis variabilis
  • †Breviphrentis yandelli
• †Briantelasma – type locality for genus
  • †Briantelasma americanum – type locality for species
  • †Briantelasma knoxboroense – type locality for species
  • †Briantelasma knoxboroensis
• †Bucanella
• †Bucania
  • †Bucania bellapuncta
  • †Bucania stigmosa
  • †Bucania sulcatina
• †Bucanopsis
• †Buchiola
  • †Buchiola retrostriata
• †Buehleroceras
  • †Buehleroceras arcuatum
  • †Buehleroceras infundibulum
  • †Buehleroceras sinuatum

• 

  Fossilized heads of the Silurian eurypterid ("sea scorpion") Buffalopterus

  †Buffalopterus
  • †Buffalopterus pustulosus
• †Bufina
  • †Bufina bicornuta
• †Bumastoides
  • †Bumastoides aplatus
  • †Bumastoides gardenensis
  • †Bumastoides milleri
• †Bumastus
  • †Bumastus ioxus
• †Bunaia
• †Buthograptus
  • †Buthograptus laxus
• †Buthotrephis
  • †Buthotrephis gracilis
  • †Buthotrephis palmata
  • †Buthotrephis ramosa
• †Byssonychia
  • †Byssonychia praecursa
  • †Byssonychia radiata
• Bythocypris
  • †Bythocypris cylindrica
  • †Bythocypris lucasensis
  • †Bythocypris phaseoella – type locality for species
  • †Bythocypris subquadrata
  • †Bythocypris transptyxis – type locality for species
  • †Bythocypris tubercula – type locality for species
• †Bythocyproidea
  • †Bythocyproidea eriensis – or unidentified comparable form
• †Bythopora

C

• †Cabrieroceras
  • †Cabrieroceras plebeiforme
• †Cairoa
  • †Cairoa lamanekii
• †Calacanthopora
  • †Calacanthopora senticosa
• †Calamophyton
  • †Calamophyton bicephalum
• †Calamopitys
  • †Calamopitys eupuncatata
• †Calceocrinus
  • †Calceocrinus chrysalis
• †Calliocrinus
• †Callipleura
  • †Callipleura nobilis
• †Callistocrinus
  • †Callistocrinus tesselatus
• †Callixylon
  • †Callixylon erianum
  • †Callixylon petryi
  • †Callixylon Zalesskyi – or unidentified comparable form
  • †Callixylon zalesskyi
• †Callocystites
  • †Callocystites jewetti
• †Calodiscus
  • †Calodiscus lobatus
• †Calvibembexia
  • †Calvibembexia sulcomarginata
• †Calvinella – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Calvinella prethoparia
• †Calymene
  • †Calymene clintoni

  • 

    Fossils in enrolled posture of the Silurian trilobite Calymene niagarensis

    †Calymene niagarensis
• †Calymenella
  • †Calymenella rostrata
• †Calyptaulax
  • †Calyptaulax annulata
  • †Calyptaulax callicephalus
• †Calyptosporites – or unidentified comparable form
  • †Calyptosporites velatus
• †Camarotoechia
  • †Camarotoechia acinus
  • †Camarotoechia aequiradiata
  • †Camarotoechia altiplicata
  • †Camarotoechia billingsi
  • †Camarotoechia constricta
  • †Camarotoechia gongregata
  • †Camarotoechia humilis
  • †Camarotoechia litchfieldensis
  • †Camarotoechia navicella
  • †Camarotoechia neglecta
  • †Camarotoechia obtusiplicata
  • †Camarotoechia obtusplicata
  • †Camarotoechia pauciplicata
  • †Camarotoechia pristinus
  • †Camarotoechia robusta
  • †Camarotoechia saxatilis
  • †Camarotoechia saxatillis
  • †Camarotoechia semiplicata
  • †Camarotoechia tethys
• †Camerella
  • †Camerella varians
  • †Camerella ventricosa

• 

  Fossilized shell of the Middle Ordovician-Silurian nautiloid cephalopod Cameroceras

  †Cameroceras
  • †Cameroceras trentonense
• †Campbelloceras
  • †Campbelloceras rotundum
• †Caninia
  • †Caninia complexa
  • †Caninia tabulata
• †Cannapora
  • †Cannapora junciformis
• †Cannopora
  • †Cannopora junciformis

• 

  Fossil of the Silurian eurypterid ("sea scorpion") Carcinosoma

  †Carcinosoma
  • †Carcinosoma scorpionis
  • †Carcinosoma spiniferus
• †Cardiograptus
• †Carinaropsis – type locality for genus
  • †Carinaropsis carinata – type locality for species
• †Cariniferella
  • †Cariniferella carinata
  • †Cariniferella tioga
• †Carinoceras
  • †Carinoceras vagans – type locality for species
• †Carniodus
  • †Carniodus carnulus
• †Carolinites
  • †Carolinites tasmanensis
• †Cartersoceras
  • †Cartersoceras noveboracense – type locality for species
• †Carydium
  • †Carydium bellistriata
  • †Carydium clarkei – type locality for species
  • †Carydium globularis
  • †Carydium varicosa
  • †Carydium varicosum
• †Caryocaris
• †Caryocrinites
  • †Caryocrinites ornatus
• †Caseoceras
  • †Caseoceras obesum – type locality for species

• 

  Illustration of a fossil and restoration of the Early Ordovician nautiloid cephalopod Cassinoceras

  †Cassinoceras
  • †Cassinoceras explanator
  • †Cassinoceras grande
• †Cassowarioides
  • †Cassowarioides whitei – type locality for species
• †Casteroceras
  • †Casteroceras alternatum
• †Catatonocrinus
  • †Catatonocrinus halli
• †Catazone
  • †Catazone nevadana – or unidentified comparable form
• †Catazyga
  • †Catazyga erratica
• †Catoraphiceras
  • †Catoraphiceras cushingi
• †Caulopteris
  • †Caulopteris lockwoodi
• †Caunopora
• †Centroceras
  • †Centroceras marcellense
• †Centrocyrtoceras
  • †Centrocyrtoceras mozolai
• †Centronella
  • †Centronella gilboa
  • †Centronella glansfagea
  • †Centronella impressa
  • †Centronella lisbonensis
• †Centrotarphyceras
  • †Centrotarphyceras imperator
  • †Centrotarphyceras seelyi
• †Ceramopora
  • †Ceramopora imbricata
  • †Ceramopora imbriccata
  • †Ceramopora incrustans
  • †Ceramopora incrustus
• †Ceramoporella
• †Ceratiocaris
• †Ceratocephala
  • †Ceratocephala triacantheis
• †Ceratopea
  • †Ceratopea canadensis – type locality for species
  • †Ceratopea obtusa – type locality for species
• †Ceratopora
• †Ceraurinella
  • †Ceraurinella latipyga – type locality for species

• 

  Fossil of the Middle-Late Ordovician trilobite Ceraurus

  †Ceraurus
  • †Ceraurus hudsoni
  • †Ceraurus pleurecanthemus
  • †Ceraurus pleurexanthemus
  • †Ceraurus pleuxanthemus
  • †Ceraurus polydorus
  • †Ceraurus pompilius
• †Chaetetes
  • †Chaetetes lycoperdon
• †Champlainopora
  • †Champlainopora chazyensis
• †Chancelloria
• †Chapinella – tentative report
• †Charactocrinus
  • †Charactocrinus pustulosus
• †Charionella
  • †Charionella ovata
  • †Charionella rostrata
• †Charionoides
  • †Charionoides doris
• †Chasmatopora
  • †Chasmatopora angulata
  • †Chasmatopora angulatum
  • †Chasmatopora asperatostriata
  • †Chasmatopora asperostriata
• †Chazydictya
  • †Chazydictya chazyensis
• †Chazyoceras
  • †Chazyoceras valcourense
• †Cheiloceras
  • †Cheiloceras amblylobum
• †Cheirocrinus
  • †Cheirocrinus anatiformis

• 

  Fossil of the Cambrian-Middle Devonian trilobite Cheirurus

  †Cheirurus
  • †Cheirurus niagarensis
• †Chilobolbina
  • †Chilobolbina hartfordensis
• †Chilotrypa
  • †Chilotrypa ostiolata
• †Chironiptrum – tentative report
  • †Chironiptrum arcuatum – type locality for species
• †Chondrites
• †Chonetes
  • †Chonetes cornutus
  • †Chonetes deflecta
  • †Chonetes ensicosta
  • †Chonetes filicostatus
  • †Chonetes hemisphericus
  • †Chonetes mucronatus
  • †Chonetes nectus – or unidentified comparable form
  • †Chonetes vicinus
• †Chonophyllum
  • †Chonophyllum magnificus
• †Chonostrophia
  • †Chonostrophia reversa
• †Chonostrophiella
• †Christiania
  • †Christiania trentonensis
• †Chutoceras
  • †Chutoceras nundaium
• †Cimitaria
  • †Cimitaria corrugata
  • †Cimitaria elongata
  • †Cimitaria recurva
• †Cincinnaticrinus
  • †Cincinnaticrinus multibrachiatus
  • †Cincinnaticrinus varibrachialis

• 

  Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina

  †Cincinnetina
  • †Cincinnetina multisecta
• †Cladochonus
  • †Cladochonus dichotoma
  • †Cladochonus jacksoni
• †Cladopora
  • †Cladopora cervicornis
  • †Cladopora fibrosa – tentative report
  • †Cladopora multipora
  • †Cladopora reticulata
  • †Cladopora seriata
• †Cladoxylon
  • †Cladoxylon dawsoni
  • †Cladoxylon hueberi
• †Clarkecrinus

• 

  Fossils (1-8) of the Silurian eurypterid ("sea scorpion") Clarkeipterus

  †Clarkeipterus
  • †Clarkeipterus testudineus – type locality for species
• †Clarkoceras
  • †Clarkoceras rhomboidale
  • †Clarkoceras ruedemanni
  • †Clarkoceras trapezoidale
• †Clathrodictyon
• †Clathropora
  • †Clathropora alcicornis
  • †Clathropora frondosa
• †Clathrospira
  • †Clathrospira euconica
  • †Clathrospira subconica
• †Cleionychia
  • †Cleionychia marginalis
  • †Cleionychia montrealensis
  • †Cleionychia undata
• †Clelandia
  • †Clelandia parabola
• †Clidochirus
  • †Clidochirus schucherti
• †Clidophorus
  • †Clidophorus obscurus
  • †Clidophorus planulatus

• 

  Assemblage of fossils of the Cambrian graptolite Climacograptus

  †Climacograptus
  • †Climacograptus typicalis
• †Clintonella
  • †Clintonella vagabunda – or unidentified comparable form
• †Clionlithes
• †Clionolithes
• †Clitambonites
  • †Clitambonites multicosta
• †Clitendoceras
  • †Clitendoceras montrealense
  • †Clitendoceras saylesi
• †Clorinda
  • †Clorinda fornicata
• †Codaster
  • †Codaster pyramidatus
• †Coeloclema
  • †Coeloclema cavernosum
• †Coelonella
  • †Coelonella scapha
• †Coelospira
  • †Coelospira camilla
  • †Coelospira dichotoma
  • †Coelospira hemispherica
  • †Coelospira plicatula
  • †Coelospira sulcata
• †Coenites
• †Coenostelodictyon
  • †Coenostelodictyon jewetti
  • †Coenostelodictyon krekovi – or unidentified comparable form
• †Coenostroma
  • †Coenostroma monticuliferum – or unidentified comparable form
• †Coleolus
  • †Coleolus aciculatum
  • †Coleolus camilla
  • †Coleolus crenatocinctum
  • †Coleolus tenuicinctum
  • †Coleolus tenuicinctus
• †Colpodexylon
  • †Colpodexylon deatsii
  • †Colpodexylon trifurcatum
• †Colpomya
  • †Colpomya faba
• †Columnaria
• †Compsocrinus
  • †Compsocrinus relictus
• †Conchopeltis
  • †Conchopeltis alternata
• †Conocardium
  • †Conocardium denticulatum – type locality for species
• †Conocephalina
  • †Conocephalina whitehallensis – type locality for species
• †Conocerina
  • †Conocerina reducta
• †Conostichnus
• †Conotheca
  • †Conotheca australiensis – type locality for species
• †Conotreta
  • †Conotreta rusti – type locality for species
• †Conularia
  • †Conularia longa
  • †Conularia niagarensis
  • †Conularia trentonensis
  • †Conularia triangularis
  • †Conularia triangulata
  • †Conularia undulata
• †Conularid

• 

  Life restoration of the Silurian-Early Devonian primitive land plant Cooksonia

  †Cooksonia
  • †Cooksonia hemisphaerica – or unidentified comparable form
• †Coolinia
  • †Coolinia subplana
  • †Coolinia tnuis
• †Cordatomyonia
  • †Cordatomyonia shupei
• †Cordylocrinus
  • †Cordylocrinus plumosus
  • †Cordylocrinus ramulosus
• †Cordylodus
  • †Cordylodus angulatus
  • †Cordylodus caseyi
  • †Cordylodus proavus
• †Cornellites
  • †Cornellites chemungensis
  • †Cornellites emaceratum
  • †Cornellites emaceratus
  • †Cornellites fasciculata
  • †Cornellites flabella
  • †Cornellites flabellum
  • †Cornellites flubella

• 

  Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites

  †Cornulites
  • †Cornulites bellistriatus
  • †Cornulites distans
  • †Cornulites flexuosus
  • †Cornulites niagarensis
• †Cornuproetus
  • †Cornuproetus beecheri
• †Coronocrinus
  • †Coronocrinus polydactylus
• †Corynexochides – tentative report
• †Corynoides
• †Corynotrypa
  • †Corynotrypa dissimilis
• †Costalocrinus
  • †Costalocrinus rex – type locality for species
  • †Costalocrinus sentosus
• †Costellirorstra
  • †Costellirorstra peculiaris – or unidentified comparable form
• †Costellirostra
• †Costellispirifer
• †Costispirifer
  • †Costispirifer arenosa – or unidentified comparable form
  • †Costispirifer arenosus
• †Costistricklandia
  • †Costistricklandia gaspeensis
  • †Costistricklandia lirata
• †Costulatostyliolina
• †Cotteroceras
• †Cranaena
  • †Cranaena eudora
  • †Cranaena lincklaeni
  • †Cranaena linklaen
  • †Cranaena linklaeni
  • †Cranaena navicella
  • †Cranaena romingeri
  • †Cranaena subalobosa
• Crania
  • †Crania crenistriata

• 

  A living Craniella sponge

  Craniella
  • †Craniella hamiltoniae
• †Craniops
  • †Craniops hamiltoniae
  • †Craniops linguiformis
  • †Craniops squammiformis
• †Crassotornoceras
  • †Crassotornoceras crassum – or unidentified related form
• †Crenistriella
  • †Crenistriella crenistria
  • †Crenistriella rotalinea
• †Crickites
  • †Crickites lindneri
• †Crinobrachiatus
  • †Crinobrachiatus brachiatus
• †Crinoid
  • †Crinoid anchors
• †Cristodus
  • †Cristodus loxoides
• †Crownopora
• †Crurispina
  • †Crurispina nana
  • †Crurispina spinosa
• †Cryptograptus
• †Cryptolithus
  • †Cryptolithus bellulus
  • †Cryptolithus lorettensis
  • †Cryptolithus tesselatus
• †Cryptonella
  • †Cryptonella planirostra
  • †Cryptonella planirostrata
  • †Cryptonella rectirostra
  • †Cryptonella rectirostrata
• †Cryptophyllus
  • †Cryptophyllus arsinius – type locality for species
• †Ctenacaronychus – type locality for genus
  • †Ctenacaronychus nortoni – type locality for species
• †Ctenocrinus
  • †Ctenocrinus nobilissimus
  • †Ctenocrinus pachydactylus
  • †Ctenocrinus stoloniferus
• †Ctenodonta
  • †Ctenodonta bidorsata
  • †Ctenodonta dubia
  • †Ctenodonta dubiaformis
  • †Ctenodonta elliptica
  • †Ctenodonta lata
  • †Ctenodonta limbata
  • †Ctenodonta machaeriformis
  • †Ctenodonta mactriformis
  • †Ctenodonta peracuta
  • †Ctenodonta salinensis
• †Ctenoloculina
  • †Ctenoloculina cicatricosa
  • †Ctenoloculina eurybathrota

• 

  Fossils and life restoration of the Silurian eurypterid ("sea scorpion") Ctenopterus

  †Ctenopterus
  • †Ctenopterus cestrotus
• †Cuneamya
  • †Cuneamya alveata
  • †Cuneamya cuneata
  • †Cuneamya elliptica
• †Cupularostrum
  • †Cupularostrum congregata
  • †Cupularostrum contracta
  • †Cupularostrum dotis
  • †Cupularostrum exima
  • †Cupularostrum eximia
  • †Cupularostrum horsfordi
  • †Cupularostrum orbicularis – tentative report
  • †Cupularostrum prolifica
  • †Cupularostrum stevensi
• †Cupulocorona
  • †Cupulocorona gemmiformis
• †Cupulocrinus
  • †Cupulocrinus gracilus
• †Cupulorostrum
  • †Cupulorostrum congregata
  • †Cupulorostrum dotis
  • †Cupulorostrum horsfordi
  • †Cupulorostrum prolifica
  • †Cupulorostrum sappho
• †Curtoceras
  • †Curtoceras eatoni
  • †Curtoceras internistriatum
• †Cyathocylindrium
• †Cyathodictya – tentative report
• †Cyathophyllum
• †Cybele
  • †Cybele prima
  • †Cybele primus
• †Cybeloides
  • †Cybeloides prima
• †Cyclonema
  • †Cyclonema cancellatum
  • †Cyclonema leptonotum
  • †Cyclonema varicasum
  • †Cyclonema varicosum
• †Cyclora
  • †Cyclora subulata
• †Cyclostomiceras
  • †Cyclostomiceras cassinense
• †Cylindrophyllum
• †Cymatonota
  • †Cymatonota raricosta
  • †Cymatonota undatum
• †Cymostrophia
  • †Cymostrophia patersoni

• 

  Fossil of the Late Ordovician-Late Devonian trilobite Cyphaspis

  †Cyphaspis
• †Cypricardella
  • †Cypricardella bellastriata
  • †Cypricardella bellistriata
  • †Cypricardella complana
  • †Cypricardella complanata
  • †Cypricardella complanatus
  • †Cypricardella crassa
  • †Cypricardella gregaria
  • †Cypricardella laroquei
  • †Cypricardella marylandica
  • †Cypricardella tenuistriata
  • †Cypricardella tenuistriatus
• †Cypricardina
• †Cypricardinea
  • †Cypricardinea indenta
• †Cypricardinia
  • †Cypricardinia indenta
  • †Cypricardinia undulostriata
• †Cypricordella
  • †Cypricordella tenuistriata
• †Cyrtactinoceras
  • †Cyrtactinoceras boycii
  • †Cyrtactinoceras champlainense
• †Cyrtia
  • †Cyrtia exporrecta
  • †Cyrtia meta
  • †Cyrtia pyramidalis
• †Cyrtina
  • †Cyrtina dalmani – or unidentified comparable form
  • †Cyrtina hamiltonensis
  • †Cyrtina hamiltoniae
  • †Cyrtina pyramidalis
  • †Cyrtina recta
  • †Cyrtina rostrata
  • †Cyrtina varia – or unidentified comparable form
• †Cyrtinoides
  • †Cyrtinoides eliei
• †Cyrtobaltoceras
  • †Cyrtobaltoceras gracile

• 

  Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras

  †Cyrtoceras
  • †Cyrtoceras eugenium
  • †Cyrtoceras kirkbyi – tentative report
  • †Cyrtoceras subcancellatum
• †Cyrtodonta
  • †Cyrtodonta alata
  • †Cyrtodonta scala
  • †Cyrtodonta solitaria
• †Cyrtodontula
  • †Cyrtodontula ventricosa
• †Cyrtolites
  • †Cyrtolites ornatus
  • †Cyrtolites pileolus
  • †Cyrtolites type locality for species – informal
• †Cyrtonella
  • †Cyrtonella mitella
• †Cyrtorizoceras
  • †Cyrtorizoceras rusti – type locality for species
• †Cyrtospira
  • †Cyrtospira raymondi

• 

  Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer

  †Cyrtospirifer
  • †Cyrtospirifer alti
  • †Cyrtospirifer altiplicatus
  • †Cyrtospirifer augusticardinalis
  • †Cyrtospirifer chemungensis
  • †Cyrtospirifer cyrtiniformis
  • †Cyrtospirifer disjunctus
  • †Cyrtospirifer hornellensis
  • †Cyrtospirifer inermis
  • †Cyrtospirifer nucalis
  • †Cyrtospirifer preshoensis
  • †Cyrtospirifer sulcifer
  • †Cyrtospirifer vandermarkensis
  • †Cyrtospirifer whitneyi
• †Cyrtostropha – type locality for genus
  • †Cyrtostropha macrospira
• †Cyrtovaginoceras
• †Cystiphylloides
  • †Cystiphylloides americanum
  • †Cystiphylloides confollis
  • †Cystiphylloides conifolis
  • †Cystiphylloides conifollis
  • †Cystiphylloides sulcatum
• †Cystiphyllum
  • †Cystiphyllum niagarense
• †Cystophylloides
• †Cytarocrinus
• †Cyttarocrinus
  • †Cyttarocrinus eriensis

D

• †Dactylogonia
  • †Dactylogonia incrassata

• 

  Fossil of the Carboniferous-Late Cretaceous petrified conifer wood morphogenus Dadoxylon

  †Dadoxylon
  • †Dadoxylon halli – or unidentified comparable form
• †Dakeoceras
  • †Dakeoceras champlainense – type locality for species
  • †Dakeoceras gracilis
  • †Dakeoceras harrisi – type locality for species
• †Dalejina
  • †Dalejina hybrida
  • †Dalejina oblata – tentative report
• †Dalmanella
  • †Dalmanella elegantula
  • †Dalmanella elgantula
  • †Dalmanella rogata
  • †Dalmanella whittakeri

• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites

  †Dalmanites
  • †Dalmanites limulurus
  • †Dalmanites litchfieldensis
• †Dalmanitina
• †Daonella
• †Dapsilodus
  • †Dapsilodus mutatus
• †Dawsonoceras
  • †Dawsonoceras americanum
  • †Dawsonoceras americanus
  • †Dawsonoceras annulatum
• †Decadocrinus
  • †Decadocrinus multinodosus
  • †Decadocrinus ornatus
• †Dechenella
  • †Dechenella macrocephalus
  • †Dechenella rowi
• †Decoriconus
  • †Decoriconus fragilis

• 

  Life restoration of two species of the Silurian trilobite Deiphon

  †Deiphon
• †Dekayia
• †Delphiceras
  • †Delphiceras cataphractum
• †Deltacrinus
  • †Deltacrinus clarus
  • †Deltacrinus contractus
• †Delthyris
• †Deltoceras
  • †Deltoceras vaningeri
• †Denayella
  • †Denayella rotalia
• †Dendrocrinus
  • †Dendrocrinus alternatus
  • †Dendrocrinus aphelos
  • †Dendrocrinus bactronodosus
  • †Dendrocrinus longidactylus
  • †Dendrocrinus ursae
• †Dendrocystites
  • †Dendrocystites paradoxocus
• †Densastroma
  • †Densastroma pexisum
• †Depasophyllum
  • †Depasophyllum tabulatum – type locality for species
• †Desmograptus
• †Devonacarus – type locality for genus
  • †Devonacarus sellnicki – type locality for species
• †Devonaster
• †Devonoblastus
  • †Devonoblastus leda
• †Devonochonetes
  • †Devonochonetes coronatus
  • †Devonochonetes scitulus
• †Diabolirhynchia
  • †Diabolirhynchia acinus – or unidentified comparable form
• †Diabolirhynchus
  • †Diabolirhynchus acinus
• †Diacanthaspis
  • †Diacanthaspis parvula
• †Diamesopora
  • †Diamesopora dichotoma
• †Diamesropora
  • †Diamesropora dichotoma
• †Diaphelasma
  • †Diaphelasma oklahomense – or unidentified comparable form
• †Diaphorastoma
• †Diaphorodus
  • †Diaphorodus delicatus
• †Dibolbina
• †Dibolisporites
  • †Dibolisporites correctus – or unidentified comparable form
• †Dicellograptus
• †Dicoelosia
  • †Dicoelosia biloba
• †Dicranella
  • †Dicranella bivertex
• †Dicranograptus
  • †Dicranograptus nicholsoni
• †Dicranopeltis
• †Dicranopltus
  • †Dicranopltus nereus – or unidentified comparable form
• †Dictyobembix
  • †Dictyobembix hebe – type locality for species
• †Dictyonema
  • †Dictyonema gracile
  • †Dictyonema gracilis
  • †Dictyonema hamiltoniae
  • †Dictyonema retiforme
  • †Dictyonema subretiforme
• †Dictyotomaria
  • †Dictyotomaria capillaria
  • †Dictyotomaria itylus – type locality for species

• 

  Fossil of the Middle Ordovician graptolite Didymograptus

  †Didymograptus
• †Diestoceras
  • †Diestoceras sycon – type locality for species
• †Dignomia
  • †Dignomia alveata
• †Dikelocephalus
  • †Dikelocephalus hartti
  • †Dikelocephalus tribulus – type locality for species
• †Dimerocrinites
  • †Dimerocrinites arborescens
  • †Dimerocrinites lilliformis
  • †Dimerocrinites lockportensis
• †Dimerocrinus
  • †Dimerocrinus brachiatus
  • †Dimerocrinus liliiformis
• †Dimeropyge
  • †Dimeropyge clintonensis
• †Dinorthis

• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dipleura

  †Dipleura
  • †Dipleura dekayi
• †Diploclema
  • †Diploclema sparsum
• †Diplograptus
• †Diplophyllum
  • †Diplophyllum subcaespitosum
• Discina
  • †Discina doria
  • †Discina minuta
• †Discinella
  • †Discinella micans
• †Discinocaris
• †Discomyorthis
  • †Discomyorthis musculosa
• †Discosorus
  • †Discosorus conoideus
• †Disphyllum
  • †Disphyllum caespitosum
• †Distacodus
  • †Distacodus falcatus
• †Distomodus
  • †Distomodus staurognathoides
• †Dizygopleura
  • †Dizygopleura intermedia
  • †Dizygopleura proutyi
• †Dizygopleurella
• †Dolatocrinus
  • †Dolatocrinus lirata
  • †Dolatocrinus liratus
  • †Dolatocrinus springeri – type locality for species
• †Doleroides
• †Dolerorthis
  • †Dolerorthis flabella
  • †Dolerorthis flabellites – or unidentified related form
• †Dolichoharpes

• 

  Life restoration of the Silurian eurypterid ("sea scorpion") Dolichopterus

  †Dolichopterus
  • †Dolichopterus herkimerensis – type locality for species
  • †Dolichopterus jewetti – type locality for species
  • †Dolichopterus macocheirus
  • †Dolichopterus siluriceps
• †Doraclatum
  • †Doraclatum compandium – type locality for species
• †Douvillina
  • †Douvillina cayuta
  • †Douvillina inaequistriata
  • †Douvillina inequistriata
  • †Douvillina ineuistriata
  • †Douvillina inquistriata
• †Dracochela – type locality for genus
  • †Dracochela deprehendor – type locality for species
• †Drepanellina
  • †Drepanellina modesta
• †Drepanoistodus
  • †Drepanoistodus concavus
  • †Drepanoistodus suberectus

• 

  Fossilized foliage from the Early-Late Devonian club moss relative Drepanophycus

  †Drepanophycus
  • †Drepanophycus colophyllus
  • †Drepanophycus gaspianus
  • †Drepanophycus spinaeformis
  • †Drepanophycus spinosus
• †Drydenia
  • †Drydenia foliata
• †Dwightoceras
  • †Dwightoceras dactyloides
• †Dynamocrinus
  • †Dynamocrinus robustus
• †Dyoidophragma
  • †Dyoidophragma polymorphum

E

• †Eatonia
  • †Eatonia medalis
  • †Eatonia medialis
• †Ecchosis – type locality for genus
  • †Ecchosis pulchribothrium – type locality for species
• †Ecculiomphalus
  • †Ecculiomphalus fredericus
• †Eccyliopterus
  • †Eccyliopterus kalmi
  • †Eccyliopterus vagrans
• †Ecdyceras
  • †Ecdyceras sinuiferum
• †Echinocaris
• †Echinocoelia
  • †Echinocoelia ambocoelioides
  • †Echinocoelia ambocoeloides
• †Echinolichas
  • †Echinolichas eriopus
• †Ectenoceras
• †Ectenocrinus
  • †Ectenocrinus simplex
  • †Ectenocrinus triangulus
• †Ectenodesma
• †Ectenolites
  • †Ectenolites clelandi
  • †Ectenolites curviseptatus
  • †Ectenolites extensus
  • †Ectenolites sinuatus
• †Ectocycloceras
  • †Ectocycloceras cataline
  • †Ectocycloceras cato
• †Edaphophyllum
• †Eddya
  • †Eddya sullivanensis
• †Edmondia (bivalve) – tentative report
  • †Edmondia philipi
• †Edriocrinus
  • †Edriocrinus occidentalis
  • †Edriocrinus pociliformis
• †Elasmonema
  • †Elasmonema lichas

• 

  Fossil of the Middle-Late Devonian trilobite Eldredgeops

  †Eldredgeops
  • †Eldredgeops rana
• †Eleutherocrinus
• †Elita
  • †Elita fimbriata
  • †Elita fimoriata
• †Ellesmeroceras
  • †Ellesmeroceras inbricatum
  • †Ellesmeroceras indomitum
• †Elliptocephala
  • †Elliptocephala asaphoides
• †Elyta
  • †Elyta fimbriata
• †Emanuella
  • †Emanuella subumbona
• †Emmanuella
  • †Emmanuella subumbona
• †Emmelezoe
• †Emmelozoe
• †Emmonsia
• †Emphanisporites – tentative report
• †Enallophrentis – tentative report
• †Encrinaster
• †Encrinurus
  • †Encrinurus ornatus

• 

  Fossilized shells and restored appearances of the Middle-Late Ordovician nautiloid cephalopod Endoceras

  †Endoceras
  • †Endoceras annuliferum
  • †Endoceras champlainense
  • †Endoceras hudsoni
  • †Endoceras magister
  • †Endoceras proteiforme
  • †Endoceras raymondi
  • †Endoceras tityrus
• †Endodesma
  • †Endodesma tranceps
• †Endophyllum
  • †Endophyllum ciurcai – type locality for species
• †Enfieldia
  • †Enfieldia mutilata
• †Ensiferites
  • †Ensiferites armatus
  • †Ensiferites bennetti
  • †Ensiferites delicatulus
  • †Ensiferites leptodactylus
  • †Ensiferites wattlesi
• †Enterolasma
  • †Enterolasma calculum
  • †Enterolasma caliculum
  • †Enterolasma strictum
• †Eoagnostus
  • †Eoagnostus acrorhachis – type locality for species
• †Eoangyomphalus
  • †Eoangyomphalus peneglabra – type locality for species
• †Eoarthropleura – type locality for genus
• †Eobucania
  • †Eobucania subovatus – type locality for species
• †Eocoelia
  • †Eocoelia hemisphaerica
  • †Eocoelia hemispherica
  • †Eocoelia intermedia
  • †Eocoelia sulcata
• †Eodevonaria
  • †Eodevonaria acutiradiata
  • †Eodevonaria arcuata
  • †Eodevonaria gaspensis – or unidentified comparable form
  • †Eodevonaria hemispherica
• †Eodictyonella (formerly Dictyonella)
  • †Eodictyonella coralifera
• †Eohalysiocrinus
  • †Eohalysiocrinus caelatus
  • †Eohalysiocrinus typus
• †Eoleperditia
• †Eomyelodactylus
  • †Eomyelodactylus sparteus – type locality for species
  • †Eomyelodactylus spartus
  • †Eomyelodactylus uniformis – type locality for species
• †Eoplectodonta
  • †Eoplectodonta transversalis
• †Eopolychaetus
• †Eorizoceras
  • †Eorizoceras platyceroides
• †Eorudolfoceras
  • †Eorudolfoceras antiquum
• †Eoschizodus
  • †Eoschizodus chemungensis
• †Eoschuchertella
  • †Eoschuchertella arcotostriata

• 

  Fossilized roots of the Middle Devonian tree Wattieza

  †Eospermatopteris
  • †Eospermatopteris erianus – tentative report
• †Eospinatrypa
  • †Eospinatrypa nodostriata
• †Eospirifer
  • †Eospirifer plicatula – or unidentified comparable form
  • †Eospirifer radiatus
• †Eospongia
  • †Eospongia varians
• †Eosyringothyris – or unidentified comparable form
  • †Eosyringothyris asper
• †Eotripteroceras
  • †Eotripteroceras minutum
• †Epitornoceras
  • †Epitornoceras mithracoides – or unidentified comparable form
  • †Epitornoceras peracutum
• †Erdiotrypa
  • †Erdiotrypa striata
• †Eremoceras
  • †Eremoceras expansum
  • †Eremoceras multicameratum
  • †Eremoceras teres

• 

  Illustration of fossils of various organs and stages of development of the Silurian-Early Devonian eurypterid ("sea scorpion") Erettopterus

  †Erettopterus
  • †Erettopterus globiceps
  • †Erettopterus grandis
  • †Erettopterus waylandsmithi – type locality for species
• †Eridophyllum
  • †Eridophyllum gigas
  • †Eridophyllum subcaespitosum
• †Eridotrypa
  • †Eridotrypa exigua
  • †Eridotrypa mutabilis
  • †Eridotrypa nutabilis
  • †Eridotrypa solida
  • †Eridotrypa striata
• †Eridotrypella
  • †Eridotrypella striata – or unidentified comparable form

• 

  Fossils (figures 2-10) of the Silurian-Devonian eurypterid ("sea scorpion") Erieopterus

  †Erieopterus
  • †Erieopterus microphthalmus
• †Eroicaspira
  • †Eroicaspira bellicincta
• †Erratencrinurus
  • †Erratencrinurus vigilans
• †Escharopora
• †Etymothyris
• †Eucalyptocrinites
  • †Eucalyptocrinites caelatus
• †Eucalyptocrinus
  • †Eucalyptocrinus caelatus
• †Eucheirocrinus
• †Euconia
  • †Euconia sinuata – type locality for species
• †Euglyphella
  • †Euglyphella asapha – type locality for species
  • †Euglyphella deltella – type locality for species
  • †Euglyphella numismoides
• †Eukloedenella
• †Eumetabolotoechia
  • †Eumetabolotoechia multicostata
• †Eunema
• †Eunoa
• †Euomphalus
  • †Euomphalus clymenoides
  • †Euomphalus fairchildi – type locality for species
• †Euptychaspis
  • †Euptychaspis typicalis
• †Eurychilina
  • †Eurychilina canadensis
  • †Eurychilina latimarginata

• 

  Fossil of the Silurian eurypterid ("sea scorpion") Eurypterus

  †Eurypterus
  • †Eurypterus dekayi
  • †Eurypterus laculatus
  • †Eurypterus pittsfordensis
  • †Eurypterus remipes
• †Eurystomites
  • †Eurystomites accelerans
  • †Eurystomites amplectens
  • †Eurystomites kelloggi
• †Euryzone
  • †Euryzone arata
  • †Euryzone clausa
  • †Euryzone itys
• †Eusarcus
• †Euspirocrinus
  • †Euspirocrinus wolcottense
• †Eutaxocrinus
  • †Eutaxocrinus ithacense
  • †Eutaxocrinus whiteavesi
• †Exoclitendoceras – type locality for genus
  • †Exoclitendoceras rochdalense – type locality for species

F

• †Fahraeusodus
  • †Fahraeusodus marathonensis
• †Failleana
  • †Failleana limbata
• †Falsipollex
  • †Falsipollex simplilobatus – type locality for species
• †Fardenia
  • †Fardenia interstriata

• 

  Fossil of the Late Ordovician-Permian tabulate coral Favosites

  †Favosites
  • †Favosites alpenensis
  • †Favosites arbuscula
  • †Favosites argus
  • †Favosites basalticus
  • †Favosites biloculi
  • †Favosites canadensis
  • †Favosites constrictus
  • †Favosites emmonsi
  • †Favosites epidermatus
  • †Favosites favosideus
  • †Favosites hamiltoniae
  • †Favosites helderbergensis
  • †Favosites helderbergiae
  • †Favosites hisingeri
  • †Favosites limitaris
  • †Favosites milne-edswardii
  • †Favosites milneedwardsii
  • †Favosites niagarensis
  • †Favosites nitella – tentative report
  • †Favosites parasiticus
  • †Favosites placenta
  • †Favosites pyriforme
  • †Favosites pyriformis
  • †Favosites tuberosa
  • †Favosites turbinata
  • †Favosites turbinatus
• †Fenestella
  • †Fenestella elegans
  • †Fenestella emaciata
  • †Fenestella eumaciata
  • †Fenestella planiramosa
  • †Fenestella tenuis
• †Fenestrellina
• †Ferestromatopora – report made of unidentified related form or using admittedly obsolete nomenclature
• †Filogranites
  • †Filogranites booiji
• †Fimbrispirifer
  • †Fimbrispirifer divaricata
  • †Fimbrispirifer divaricatus
• †Finkelnburgia
• †Fistulipora
  • †Fistulipora crustula
  • †Fistulipora laminata
  • †Fistulipora sphericus
  • †Fistulipora tuberculosa
• †Fistulopora
  • †Fistulopora tuberculosa
• †Flabellitesia
  • †Flabellitesia flabellites
• †Fletcheria
  • †Fletcheria incerta
  • †Fletcheria incognita
• †Fletcherina
  • †Fletcherina incognita

• 

  Front (left) and right side (right) views of an enrolled fossil of the Middle Ordovician-Silurian trilobite Flexicalymene

  †Flexicalymene
  • †Flexicalymene senaria
• †Floripatella
  • †Floripatella irregularis
• †Floweria
  • †Floweria arctostriata
  • †Floweria becraftensis
  • †Floweria chemungensis
  • †Floweria perversa
• †Foersteoceras
• †Foerstephyllum
  • †Foerstephyllum halli
• †Foliaster
  • †Foliaster transversus
• †Foordites
  • †Foordites buttsi – or unidentified comparable form

• 

  Illustrations of fossilized shells of the Cambrian marine bivalve Fordilla

  †Fordilla
• †Fremontoceras
  • †Fremontoceras jewetti
• †Fusispira

G

• †Garwoodia
  • †Garwoodia gregaria
• †Gasconadia
  • †Gasconadia floridensis – type locality for species
  • †Gasconadia mohawkensis – type locality for species
• †Gazacrinus
  • †Gazacrinus immaturus

• 

  Fossilized shell of the Middle Ordovician-Middle Devonian nautiloid cephalopod Geisonoceras

  †Geisonoceras
  • †Geisonoceras lineolatus
  • †Geisonoceras shumardi
  • †Geisonoceras tenuistriatum
  • †Geisonoceras tenuitextum
• †Gelasinotarbus – type locality for genus
  • †Gelasinotarbus bifidus – type locality for species
  • †Gelasinotarbus bonamoae – type locality for species
  • †Gelasinotarbus fimbriunguis – type locality for species
  • †Gelasinotarbus heptops – type locality for species
  • †Gelasinotarbus reticulatus – type locality for species
• †Gennaeocrinus
  • †Gennaeocrinus eucharis

• 

  Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus

  †Gilbertsocrinus
  • †Gilbertsocrinus alpenensis
  • †Gilbertsocrinus intersculptus – type locality for species
  • †Gilbertsocrinus rarispinus – type locality for species
  • †Gilbertsocrinus spinigerous
  • †Gilbertsocrinus spinigerus
• †Gilboaphyton
  • †Gilboaphyton goldringiae
• †Gilboarachne
  • †Gilboarachne griersoni – type locality for species
• †Ginkgophyton
• †Glaphurina
  • †Glaphurina lamottensis
• †Glaphurus
  • †Glaphurus pustulatus
  • †Glaphurus pustulotus
• †Glenisteroceras
  • †Glenisteroceras obscurum
• †Glossites
  • †Glossites depressus
  • †Glossites nuculoides
• †Glossograptus
• †Glyptocardia
  • †Glyptocardia speciosa

• 

  Assemblage of fossils of the Middle Ordovician-Silurian crinoid ("sea lily") Glyptocrinus

  †Glyptocrinus
• †Glyptocystites
  • †Glyptocystites forbesi
• †Glyptodesma
• †Glyptograptus
• †Glyptomena
  • †Glyptomena distans
  • †Glyptomena prisca
• †Glyptorthis
  • †Glyptorthis bellarugosa
  • †Glyptorthis crispata
  • †Glyptorthis sulcata
• †Glyptotomaria
  • †Glyptotomaria ciliata – type locality for species
  • †Glyptotomaria genundewa – type locality for species

• 

  Fossilized shell of the Middle Devonian nautiloid cephalopod Goldringia

  †Goldringia
  • †Goldringia trivolvis
• †Gomphoceras
• †Gomphocysstites
  • †Gomphocysstites tenax – or unidentified comparable form
• †Gonatocaris
• †Gondekia
  • †Gondekia lancifer

• 

  Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites

  †Goniatites
• †Gonioceras
  • †Gonioceras anceps
  • †Gonioceras brainerdi
  • †Gonioceras chaziense
  • †Gonioceras multiseptatum
  • †Gonioceras pameliense
  • †Gonioceras quadratum
• †Goniograptus
• †Goniophora
  • †Goniophora chemungensis
  • †Goniophora hamiltonensis
  • †Goniophora hamiltoniae
  • †Goniophora rugosa
  • †Goniophora truncata
• †Goniophoria
  • †Goniophoria chemungensis
• †Goniostropha
  • †Goniostropha extenuata
• †Gosseletia
  • †Gosseletia triquetra
• †Gothocrinus – tentative report
  • †Gothocrinus multibrachiatus
• †Graciloceras
  • †Graciloceras longidomum
• †Gramatodon
  • †Gramatodon chemungensis
  • †Gramatodon hamiltoniae
• †Grammatodon
  • †Grammatodon hamiltoniae
• †Grammysia
  • †Grammysia alveata
  • †Grammysia arcuata
  • †Grammysia bisulcata
  • †Grammysia elliptica
  • †Grammysia nodocosta
  • †Grammysia obsoleta
  • †Grammysia praecursor
• †Grammysioidea
  • †Grammysioidea alveata
  • †Grammysioidea arcuata
  • †Grammysioidea constricta
  • †Grammysioidea elliptica – or unidentified comparable form
  • †Grammysioidea globosa
  • †Grammysioidea obsoleta
  • †Grammysioidea subarcuata
• †Grammysoidea
  • †Grammysoidea arcuata
  • †Grammysoidea bisulcata
  • †Grammysoidea constricta
• †Graptodictya
• †Graptospongia

• 

  Fossil of the Middle-Late Devonian trilobite Greenops

  †Greenops
  • †Greenops boothi
• †Grinnellaspis
  • †Grinnellaspis marginiata – or unidentified comparable form
• †Groomodiscus
  • †Groomodiscus calcifer – type locality for species
• †Gypidula
  • †Gypidula coeymanensis
• †Gyroceras
  • †Gyroceras paucinodum

H

• †Habrostroma
  • †Habrostroma centrotum
  • †Habrostroma controtum
  • †Habrostroma microporum
• †Hadrophyllum
  • †Hadrophyllum woodi
• †Hagnocrinus
  • †Hagnocrinus corporiculus
• †Haileyia
• †Halkieria
• †Hallinetes
  • †Hallinetes lineatus
  • †Hallinetes setigera

• 

  Life restoration of the Late Devonian eurypterid ("sea scorpion") Hallipterus

  †Hallipterus
  • †Hallipterus excelsior
• †Halloceras
  • †Halloceras undulatum
• †Hallograptus
• †Hallopora
  • †Hallopora elegantula
• †Halysites
  • †Halysites catenularia
• †Hanaites
  • †Hanaites platus
• †Hapsiphyllum
  • †Hapsiphyllum bifurcatum
• †Haptocrinus

• 

  Fossil of the Silurian eurypterid ("sea scorpion") Hardieopterus

  †Hardieopterus
  • †Hardieopterus myops
• †Haskinsia
  • †Haskinsia colophylla
• †Healdia
  • †Healdia arkonensis – or unidentified comparable form
• †Hebetoceras
  • †Hebetoceras cylindriforme
  • †Hebetoceras mirandum
• †Hedeina
  • †Hedeina eudora
  • †Hedeina macropleura
• †Hedellara
• †Hederella
• †Helcionella
  • †Helcionella subrugosa
• †Heliolites
  • †Heliolites elegans
  • †Heliolites pyriformis
  • †Heliolites spinipora – tentative report
• †Heliomeroides
  • †Heliomeroides teres
• †Heliophylloides
  • †Heliophylloides corniculum

• 

  Fossil of the Middle Devonian horn coral Heliophyllum

  †Heliophyllum
  • †Heliophyllum confluens
  • †Heliophyllum gemmatum
  • †Heliophyllum halli
• †Helopora
  • †Helopora fragilis
  • †Helopora ragilis
• †Hemiarges
  • †Hemiarges turneri
• †Hemiaspis
• †Hemicystites
  • †Hemicystites parasiticus

• 

  Fossil of the Cambrian trilobite Hemirhodon

  †Hemirhodon
• †Hennigopora
• †Hepaticites
  • †Hepaticites devonicus
• †Hercostrophia
  • †Hercostrophia subcamerata
• †Hercynella
  • †Hercynella buffaloensis – or unidentified comparable form
• †Hernodia
• †Herrmannina
  • †Herrmannina alta
• †Hertzina
  • †Hertzina elongata
• †Hesperorthis
  • †Hesperorthis costalis
  • †Hesperorthis ignicula
• †Heterocrinus
  • †Heterocrinus heterodactylus
• †Heterophrentis
  • †Heterophrentis complanata
  • †Heterophrentis prolifica
  • †Heterophrentis simplex
• †Heteroschisma
  • †Heteroschisma canadensis
• †Hexameroceras
  • †Hexameroceras chadwicki – tentative report
• †Hibbardia
  • †Hibbardia lacrimosa
• †Hibbertia
  • †Hibbertia valcourensis
• †Hindella
• †Hindia
• †Hipparionix
• †Hipparionyx
  • †Hipparionyx proximus – or unidentified comparable form
• †Hoareicardia
  • †Hoareicardia cunea
• †Hollinella
  • †Hollinella ampulla – type locality for species
  • †Hollinella epakra – type locality for species
  • †Hollinella plauta
  • †Hollinella retusilobata – type locality for species
  • †Hollinella sella – type locality for species
  • †Hollinella tricollina
• †Holocystites – tentative report

• 

  Fossilized shells of the Ordovician-Carboniferous sea snail Holopea

  †Holopea
  • †Holopea obsoleta
  • †Holopea plauta
  • †Holopea plautus
  • †Holopea scrutator
• †Homalonotus
  • †Homalonotus delphinocephalus
  • †Homalonotus dlephinocephalus
• †Homalophyllum
  • †Homalophyllum exigum
• †Homeospira
  • †Homeospira apriniformis
• †Homocrinus
  • †Homocrinus parvus
• †Homocystites
  • †Homocystites anatiformis
• †Homoeospira
  • †Homoeospira apriniformis
• †Homotrypa
  • †Homotrypa similis
• †Hormotoma
  • †Hormotoma bilineata – type locality for species
  • †Hormotoma gracilis
  • †Hormotoma micula
  • †Hormotoma simplex
  • †Hormotoma sulcatum
• †Hostinella
  • †Hostinella silurica
• †Howellella
  • †Howellella crispa
  • †Howellella cycloptera – or unidentified comparable form
  • †Howellella cyclopterus
  • †Howellella vanuxemi
• †Hudsonoceras
  • †Hudsonoceras aristos

• 

  Fossils of the Silurian eurypterid ("sea scorpion") Hughmilleria

  †Hughmilleria
  • †Hughmilleria shawangunk
  • †Hughmilleria socialis
• †Hungerfordia
  • †Hungerfordia dichotoma
• †Hyattidina
  • †Hyattidina congesta
• †Hyboaspis
  • †Hyboaspis depressa
• †Hyenia
  • †Hyenia banksii
• †Hyolithellus
  • †Hyolithellus micans
  • †Hyolithellus papillatus – type locality for species

• 

  Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha

  †Hyolithes
  • †Hyolithes aclis
  • †Hyolithes americanus
  • †Hyolithes gibbosus
• †Hypagnostus
• †Hyperoblastus
  • †Hyperoblastus goldringae
• †Hypodicranotus
  • †Hypodicranotus striatulus
• †Hypothyridina
  • †Hypothyridina venestula
  • †Hypothyridina venustula
• †Hysterolites
  • †Hysterolites perimele
• †Hystricurus
  • †Hystricurus conicus – or unidentified comparable form
  • †Hystricurus ellipticus

I

• †Ibyka
  • †Ibyka amphikoma
• †Ichthyocrinus
  • †Ichthyocrinus laevis
• †Icriodella
  • †Icriodella superba
• †Icriodus
  • †Icriodus alternatus
• †Icthyocrinus
  • †Icthyocrinus conoideus
  • †Icthyocrinus laevis
  • †Icthyocrinus subangulatus
• †Idiospira – tentative report
  • †Idiospira longa – type locality for species
• †Illaenoides
• †Illaenus
  • †Illaenus incertus
  • †Illaenus punctatus
• †Inocaulis
  • †Inocaulis aborescens
• †Insolitotheca – type locality for genus
  • †Insolitotheca communis
• †Intexodictyon
  • †Intexodictyon manliusense – type locality for species

• 

  Fossil of the Ordovician crinoid ("sea lily") Iocrinus

  †Iocrinus
  • †Iocrinus subcrassus
  • †Iocrinus trentonensis
• †Iridistrophia
  • †Iridistrophia radiata – or unidentified comparable form
• †Iridopteris
  • †Iridopteris eriensis
• †Ischadites
  • †Ischadites planoconvexa
  • †Ischadites planoconvexum
  • †Ischadites planoconvexus
• †Ischyrodonta
  • †Ischyrodonta unionoides
• †Ischyrotoma
• †Isochilina
  • †Isochilina labrosa
• †Isograptus
• †Isorthis
  • †Isorthis perelegans
  • †Isorthis proinqua
  • †Isorthis propinqua
• †Isoteloides
  • †Isoteloides canalis
  • †Isoteloides peri

• 

  Fossil of the Middle-Late Ordovician giant trilobite Isotelus.

  †Isotelus
  • †Isotelus angusticaudum
  • †Isotelus bearsi
  • †Isotelus canalis
  • †Isotelus gigas
  • †Isotelus gingas
  • †Isotelus harrisi
  • †Isotelus obtusum
  • †Isotelus obtusus
  • †Isotelus simplex
  • †Isotelus walcotti
• †Ithacadictya – type locality for genus
  • †Ithacadictya cornelli – type locality for species

J

• †Janusella
• †Jenningsina
  • †Jenningsina catenulata
• †Joleaudella
  • †Joleaudella catilloides
• †Jonesina
  • †Jonesina apoglypha – type locality for species
• †Jordanopora
  • †Jordanopora heroensis

K

• †Katabuporhynchus
  • †Katabuporhynchus mesacostalis
• †Kawina
  • †Kawina chazyensis
• †Keithiella
• †Keraiaceras – tentative report
  • †Keraiaceras percostatum
• †Keriaceras – tentative report
  • †Keriaceras percostatum
• †Kiaeropterus
  • †Kiaeropterus otisius

• 

  Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras

  †Kionoceras
  • †Kionoceras cancellatum
  • †Kionoceras erraticum – type locality for species
  • †Kionoceras infrequens – type locality for species
  • †Kionoceras polyplicatum – type locality for species
  • †Kionoceras profundum
  • †Kionoceras valcourense – type locality for species
• †Kirkbyella
  • †Kirkbyella tora – type locality for species
  • †Kirkbyella unicornis
  • †Kirkbyella verticalis
• †Kitikamispira
  • †Kitikamispira concinna – type locality for species
  • †Kitikamispira hamiltoniae
• †Kloedenella
• †Kloedenia
• †Knorria
  • †Knorria chemungensis
• †Knoxiella
  • †Knoxiella reticulata – type locality for species
• †Kockelella
  • †Kockelella ortus
  • †Kockelella ranuliformis
  • †Kockelella walliseri
• †Koenenia
  • †Koenenia emarginata
• †Koenenites
  • †Koenenites beckeri – type locality for species
  • †Koenenites cooperi
  • †Koenenites fasciculatus
  • †Koenenites styliophilus – type locality for species
• †Kophinocrinus
  • †Kophinocrinus spiniferous
  • †Kophinocrinus spiniferus
• †Kozlowskiellina
  • †Kozlowskiellina perlamellosa
• †Kyphosocrinus
  • †Kyphosocrinus tetreaulti

L

• †Labechia
  • †Labechia eatoni
  • †Labechia prima – type locality for species
  • †Labechia pustulosa – or unidentified comparable form
  • †Labechia valcourensis – type locality for species
• †Lambeophyllum
  • †Lambeophyllum profundum
• †Lamottoceras
  • †Lamottoceras franklini
• †Lamottopora
  • †Lamottopora duncanae
• †Lapworthella
  • †Lapworthella schodakensis
• †Lasiocrinus
  • †Lasiocrinus scoparius
• †Laurentoscandodus
  • †Laurentoscandodus triangularis
  • †Laurentoscandodus triangulatus
• †Lawrenceoceras
  • †Lawrenceoceras breve
  • †Lawrenceoceras confertissimum
• †Lecanocrinus
  • †Lecanocrinus macropetalus
  • †Lecanocrinus magnaradialis
  • †Lecanocrinus pusillus – or unidentified comparable form
• †Lecanospira
  • †Lecanospira compacta

• 

  Fossils of the Middle Devonian clubmoss Leclercqia

  †Leclercqia
  • †Leclercqia complexa
• †Leidosigillaria – or unidentified comparable form
• †Leioclema
  • †Leioclema aspera
  • †Leioclema asperum
  • †Leioclema confertiporum
  • †Leioclema decipiens
  • †Leioclema florida
• †Leiocorphyge – tentative report
  • †Leiocorphyge lobata – type locality for species
• †Leiocoryphe – tentative report
  • †Leiocoryphe lobata
• †Leiopyge
• †Leiorhynchus
  • †Leiorhynchus laura
  • †Leiorhynchus limitare
  • †Leiorhynchus limitaris
  • †Leiorhynchus mesacarina
  • †Leiorhynchus multicostum
  • †Leiorhynchus multiscostum – tentative report
  • †Leiorhynchus quadracostata
  • †Leiorhynchus quadracostatus
  • †Leiorhynchus quadricostatum
  • †Leiorhynchus sinuata
  • †Leiorhynchus sinuatum
  • †Leiorhynchus ventricosum
• †Leperditia
  • †Leperditia alta
  • †Leperditia canadensis
  • †Leperditia fabulites
  • †Leperditia limatula
  • †Leperditia nana
  • †Leperditia scalaris
• †Lepidocoleus
  • †Lepidocoleus jamesi

• 

  Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911).

  †Lepidodendron
  • †Lepidodendron chemungense
• †Lepidosigillaria
  • †Lepidosigillaria whitei
• †Lepocrinites
  • †Lepocrinites gebhardi
  • †Lepocrinites gebhardii
• †Leptaean
  • †Leptaean rhomboidalis – report made of unidentified related form or using admittedly obsolete nomenclature
• †Leptaena
  • †Leptaena moniquensis
  • †Leptaena ordovicica
  • †Leptaena rhomboidalis
• †Leptaenisca
• †Leptobolus
  • †Leptobolus insigna
  • †Leptobolus insignis
• †Leptochilodiscus
• †Leptocoelia
  • †Leptocoelia flabellites
• †Leptodesma
  • †Leptodesma bigsbyi
  • †Leptodesma billingsi
  • †Leptodesma clitus
  • †Leptodesma conradi
  • †Leptodesma dekayi
  • †Leptodesma extenuatum
  • †Leptodesma jason
  • †Leptodesma laevis
  • †Leptodesma lichas
  • †Leptodesma mathori
  • †Leptodesma mesacostalis
  • †Leptodesma mortoni
  • †Leptodesma naviforme
  • †Leptodesma nitida
  • †Leptodesma potens
  • †Leptodesma propinquum
  • †Leptodesma rafinesqui
  • †Leptodesma rhomboidea
  • †Leptodesma rhomboideum
  • †Leptodesma sayi
  • †Leptodesma spinerigum
  • †Leptodesma spinigerum
  • †Leptodesma striatula
  • †Leptodesma striatus
  • †Leptodesma subplana
  • †Leptodesma torregi
  • †Leptodesma waviformes
• †Leptograptus
  • †Leptograptus annectans

• 

  Leptospira

  †Leptospira
  • †Leptospira gibbosa
• †Leptostrophia
  • †Leptostrophia beckii
  • †Leptostrophia bipartita
  • †Leptostrophia planulata
• †Leptotrypella
  • †Leptotrypella amplectens
  • †Leptotrypella asterica
  • †Leptotrypella multitecta
• †Levenea
  • †Levenea subcarinata
• †Levenia
  • †Levenia lenticularis

• 

  Life restoration of the Early Ordovician nautiloid cephalopod Levisoceras

  †Levisoceras
• †Liacalymene
• †Lichenalia
  • †Lichenalia concentrica
• †Lichenocrinus
• †Lidstroemella
  • †Lidstroemella aspidum
• †Limoptera
  • †Limoptera macroptera
• †Limuloides – tentative report
• †Linguatornoceras
  • †Linguatornoceras linguum – or unidentified related form
• †Linguella
  • †Linguella granvillensis – or unidentified comparable form
• †Lingula
  • †Lingula allingi – type locality for species
  • †Lingula clintoni
  • †Lingula complanata
  • †Lingula curta
  • †Lingula densa
  • †Lingula desiderata
  • †Lingula lamellata
  • †Lingula oblata
  • †Lingula procne
  • †Lingula punctata
  • †Lingula riciniformis
  • †Lingula semina
  • †Lingula spatulata
  • †Lingula vicina
• †Lingulapholis – tentative report

• 

  Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella

  †Lingulella
  • †Lingulella brainerdi
  • †Lingulella columba
  • †Lingulella granvillensis
  • †Lingulella prima
• †Lingulepis
  • †Lingulepis acuminata
• †Linnarssonia
• †Linoporella
• †Liocalymene
  • †Liocalymene clintonensis
  • †Liocalymene clintoni
  • †Liocalymene niagarensis
• †Liomphalus
  • †Liomphalus disjunctus
• †Liospira
  • †Liospira americana
• †Lobobactrites
  • †Lobobactrites clavus
• †Lobotornoceras
  • †Lobotornoceras hassoni – or unidentified related form
• †Loculipora
  • †Loculipora perforata
• †Logocrinus
  • †Logocrinus geniculatus
• †Lonchocephalus
  • †Lonchocephalus calciferus

• 

  Fossil of the Ordovician trilobite Lonchodomas

  †Lonchodomas
  • †Lonchodomas chaziensis
  • †Lonchodomas halli
• †Longispina
  • †Longispina mucronata
  • †Longispina mucronatus
• †Longstaffia
  • †Longstaffia pulchra
• †Lophospira
  • †Lophospira billingsi
  • †Lophospira perangulata
  • †Lophospira rectistriata
  • †Lophospira ventricosa
• †Loxodus
  • †Loxodus bransoni
• †Loxonema
  • †Loxonema bertiense – tentative report
  • †Loxonema postremum
• †Loxophragma
  • †Loxophragma lechrium
• †Loxoplocus
  • †Loxoplocus gothlandicus – type locality for species
• †Lucasella – tentative report
  • †Lucasella spinulifera
• †Lunulacardium
  • †Lunulacardium curtum
  • †Lunulacardium marcellense
  • †Lunulacardium ornatum
• †Luprisca – type locality for genus
  • †Luprisca incuba – type locality for species
• †Lyriocrinus
  • †Lyriocrinus dactylus
• †Lyriopecten
  • †Lyriopecten orbiculatus
• †Lyrodesma
  • †Lyrodesma poststriatum

M

• †Macgeea
  • †Macgeea ponderosa – type locality for species
• †Machaeraria
• †Mackinnonia
  • †Mackinnonia rostratum – type locality for species
  • †Mackinnonia taconica – type locality for species
• †Macluritella
  • †Macluritella imperfecta – type locality for species
  • †Macluritella multiseptarius – type locality for species
  • †Macluritella uniangulata
• †Maclurites
  • †Maclurites magnus
• †Macrochilina
  • †Macrochilina pygmaea
  • †Macrochilina seneca
• †Macrocoelia
  • †Macrocoelia champlainensis
  • †Macrocoelia ruedemanni
• †Macropleura
  • †Macropleura eudora
  • †Macropleura macropleura
• †Macrostylocrinus
  • †Macrostylocrinus fusibrachiatus
  • †Macrostylocrinus granulosus – or unidentified comparable form
  • †Macrostylocrinus ornatus
• †Maeneceras
  • †Maeneceras acutolaterale – or unidentified related form
• †Malocystites
  • †Malocystites emmonsi
  • †Malocystites murchisoni
• †Manticeras

• 

  Fossilized shell of the Devonian ammonoid cephalopod Manticoceras

  †Manticoceras
  • †Manticoceras contractum
  • †Manticoceras lamed
  • †Manticoceras nodifer
  • †Manticoceras sinuosum
• †Mariacrinus – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Mariacrinus stoloniferus
• †Marsupiocrinus
  • †Marsupiocrinus tentaculatus
• †Mastigobolbina
  • †Mastigobolbina clarkei
  • †Mastigobolbina decora
  • †Mastigobolbina incipiens
  • †Mastigobolbina lata
  • †Mastigobolbina punctata
  • †Mastigobolbina retifera
  • †Mastigobolbina trilobata
  • †Mastigobolbina trilobatus
  • †Mastigobolbina trilobita
  • †Mastigobolbina typus
  • †Mastigobolbina vanuxemi
• †Mastigograptus
• †Matherella – type locality for genus
  • †Matherella saratogensis

• 

  Fossilized plates of the Cambrian-Early Ordovician chiton Matthevia

  †Matthevia
• †Mccluskiceras – type locality for genus
  • †Mccluskiceras comstockense – type locality for species
• †Mclearnites
• †Mcqueenoceras
  • †Mcqueenoceras jeffersonense – or unidentified related form
• †Meadowtownella
  • †Meadowtownella trentonensis
• †Mediospirifer
  • †Mediospirifer angustus
  • †Mediospirifer audaculus
  • †Mediospirifer mucronatus
• †Medusaegraptus
  • †Medusaegraptus graminiformis
• †Medusagraptus
• †Megakozlowkiella
  • †Megakozlowkiella sculptilis
• †Megakozlowskiella
  • †Megakozlowskiella perlamellosa – or unidentified comparable form
  • †Megakozlowskiella raricosta
  • †Megakozlowskiella sculptilis
  • †Megakozlowskiella sculptis
• †Megambonia
  • †Megambonia aviculoidea
• †Meganterella
  • †Meganterella finksi
• †Megastrophia
  • †Megastrophia concava
  • †Megastrophia hemisphaerica
  • †Megastrophia hemispherica
  • †Megastrophia hemisphericus
  • †Megastrophia profunda
• †Megastylia
• †Megistocrinus
  • †Megistocrinus depressus
• †Mellopegma – tentative report
  • †Mellopegma georginensis – tentative report
• †Melocrinus
  • †Melocrinus ornatus – type locality for species
• †Mendacella
• †Meniscoceras
  • †Meniscoceras coronense
• †Menoeidina
  • †Menoeidina multipuncata – type locality for species
  • †Menoeidina versicula – type locality for species

• 

  Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella

  †Meristella
  • †Meristella arcuata
  • †Meristella barissi
  • †Meristella barrisi
  • †Meristella doris
  • †Meristella haskinsi
  • †Meristella laevis
  • †Meristella nasuta
  • †Meristella praenuntia
  • †Meristella princeps
  • †Meristella scitula
• †Meristina
  • †Meristina nasuta
• †Merocrinus
  • †Merocrinus corroboratus
  • †Merocrinus typus
• †Mesocoelia
  • †Mesocoelia gregaria – or unidentified comparable form
• †Mesodouvillina
  • †Mesodouvillina varistriata
• †Mesoleptosrophia
  • †Mesoleptosrophia junia
• †Mesoleptostrophia
  • †Mesoleptostrophia junia
• †Mesopalaeaster – tentative report
  • †Mesopalaeaster lanceolatus
• †Mesotrypa
  • †Mesotrypa numiformis
  • †Mesotrypa nummiformis
• †Metabaltoceras – type locality for genus
  • †Metabaltoceras fusiforme – type locality for species
• †Metaconularia
• †Metaplasia
  • †Metaplasia minuta
• †Metriophyllum
• †Michelia
  • †Michelia whiteavesi – type locality for species
• †Michelinia
  • †Michelinia stylopora
• †Michelinoceras
  • †Michelinoceras aldenense
  • †Michelinoceras rigidum
• †Microchilina
• †Microcyclus
• †Microdisca
• †Micromitra
• †Mictophyllum
  • †Mictophyllum orientalis – type locality for species
• †Millardicurus
• †Mimella
  • †Mimella borealis
  • †Mimella vulgaris
• †Mirabiloceras
  • †Mirabiloceras multitubulatum
• †Missisquoia
  • †Missisquoia typicalis
• †Mitroceras

• 

  Fossil of the Silurian eurypterid ("sea scorpion") Mixopterus

  †Mixopterus
  • †Mixopterus multispinosus
• †Modiella
  • †Modiella pygmaea
• †Modiodesma
  • †Modiodesma modiolare
• †Modiolopsis
  • †Modiolopsis anodontoides
  • †Modiolopsis exanimis
  • †Modiolopsis fabaformis
  • †Modiolopsis modiolaris
  • †Modiolopsis orthoconcavus – type locality for species
  • †Modiolopsis ovata
  • †Modiolopsis subalata
  • †Modiolopsis subalatus
  • †Modiolopsis subcarinata
  • †Modiolopsis subcarinatus
• †Modiomorpha
  • †Modiomorpha chemungensis
  • †Modiomorpha concentrica
  • †Modiomorpha mutiloides
  • †Modiomorpha mytiloides
  • †Modiomorpha pygmaea
  • †Modiomorpha quadrula
  • †Modiomorpha subalata
• †Modiomorphia
  • †Modiomorphia alta
  • †Modiomorphia concentrica
  • †Modiomorphia mytiloides
• †Monoceratina
  • †Monoceratina casei
• †Monodechenella
  • †Monodechenella macrocephala
  • †Monodechenella macrocephalus

• 

  Fossils of the Early Devonian graptolite Monograptus

  †Monograptus
  • †Monograptus clintonensis
• †Monotrypa
  • †Monotrypa benjamini
  • †Monotrypa osgoodensis – or unidentified comparable form
• †Monotrypella
  • †Monotrypella abrupta – tentative report
  • †Monotrypella arbuscula – tentative report
• †Montyoceras
  • †Montyoceras arcuatum
  • †Montyoceras curviseptatum
  • †Montyoceras titaniforme
• †Moorea
• †Morania
• †Mourlonia
  • †Mourlonia filitexta
  • †Mourlonia plena
  • †Mourlonia rugulata
  • †Mourlonia subzona – type locality for species
• †Mucopraeca
  • †Mucopraeca multicostata – type locality for species

• 

  Fossilized shell of the Devonian brachiopod Mucrospirifer

  †Mucrospirifer
  • †Mucrospirifer consobrinus
  • †Mucrospirifer mucronata
  • †Mucrospirifer mucronatus
  • †Mucrospirifer tulliensis
• †Mucrospirifier
  • †Mucrospirifier mucronatus
• †Mucrspirifer
  • †Mucrspirifer mucronatus
• †Mulceodens
  • †Mulceodens eboraceus – type locality for species
• †Multicostella
  • †Multicostella platys
• †Murchisonia
  • †Murchisonia micula
  • †Murchisonia subulata
• †Muscrospirifer
  • †Muscrospirifer mucronatus
• †Myalina – tentative report
  • †Myalina newelli
• †Myelodactylus
  • †Myelodactylus convolutus
  • †Myelodactylus linae
• †Mytilarca
  • †Mytilarca mytiliformis
  • †Mytilarca oviformis
• †Mytilops
  • †Mytilops praecedens

N

• †Nanahughmilleria
  • †Nanahughmilleria clarkei
  • †Nanahughmilleria prominens
• †Nanillaenus
  • †Nanillaenus americanus
• †Nanno
  • †Nanno noveboracum
• †Nanothyris
  • †Nanothyris subglobosa – or unidentified comparable form
• †Naplesites
  • †Naplesites naplesense
• †Naticonema

• 

  Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis

  †Naticopsis
• †Navispira – tentative report
• †Nemagraptus
• †Nematopora
  • †Nematopora ovalis
  • †Nematopora raripora
• †Neoaxon
• †Neokloedenella
• †Neozaphrentis
• †Nephriticeras
  • †Nephriticeras metula
• †Nervostrophia
  • †Nervostrophia nervosa
  • †Nervostrophia plana
  • †Nervostrophia tulliensis
• †Newportopora
  • †Newportopora typicalis
• †Niagaracrinus
  • †Niagaracrinus kopfi
• †Nicholsonella
  • †Nicholsonella florida
• †Nieszkowskia – tentative report
  • †Nieszkowskia satyrus
• †Nileoides
  • †Nileoides perkinsi
• †Niobe

• 

  Illustrations of fossilized foliage of the Carboniferous-Permian plant Noeggerathia

  †Noeggerathia
  • †Noeggerathia gilboensis
• †Nowakia
  • †Nowakia otomari
• †Nucleocrinus
• †Nucleospira
  • †Nucleospira concinna
  • †Nucleospira pisiformis
  • †Nucleospira ventricosa
  • †Nucleospira ventricosta
• Nucula
• Nuculana
• †Nucularca
  • †Nucularca lorrainensis
  • †Nucularca pectunculoides
• †Nuculites
  • †Nuculites lamellata
  • †Nuculites nyassa
  • †Nuculites nyssa
  • †Nuculites oblongatus
  • †Nuculites scitulus
  • †Nuculites triqueter
  • †Nuculites triquiter

• 

  Nuculoidea

  †Nuculoidea
  • †Nuculoidea corbuliformis
  • †Nuculoidea deceptriformis – type locality for species
  • †Nuculoidea lirata
• †Nyassa
  • †Nyassa arguata
  • †Nyassa arguta
  • †Nyassa dorsata
• †Nybyoceras
  • †Nybyoceras cryptum
• †Nylanderina
  • †Nylanderina goldringae

O

• 

  Illustration of fossils of the Cambrian brachiopod Obolella

  †Obolella
• †Obolus
• †Octonaria
  • †Octonaria bifurcata – type locality for species
• †Odontocephalus
  • †Odontocephalus selenurus
• †Odontochile
  • †Odontochile micrurus

• 

  Restoration of the Late Ordovician-Middle Devonian trilobite Odontopleura

  †Odontopleura
• †Oepikina
• †Oepikodus
  • †Oepikodus communis
• †Oistodus
  • †Oistodus eutyphus
  • †Oistodus venustus
• †Olenellus
• †Olenoides
• †Omospira
  • †Omospira trentonensis
• †Oncoceras
  • †Oncoceras constrictum
  • †Oncoceras pristinum
  • †Oncoceras subrectum
• †Oneotodus – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Oneotodus cavus
• †Onoceras
• †Ontaria
• †Onychoplecia
  • †Onychoplecia longirostris
• †Oonoceras
  • †Oonoceras perkinsi
  • †Oonoceras seelyi
• †Ophileta
  • †Ophileta discus – type locality for species
• †Opsiconidion
  • †Opsiconidion praecursor – or unidentified comparable form
• †Orbiculoidea
  • †Orbiculoidea lodensis
  • †Orbiculoidea lodiensis
  • †Orbiculoidea molina
  • †Orbiculoidea newberryi
  • †Orbiculoidea tenuistriata
  • †Orbiculoidea truncata
  • †Orbiculoidea vanuxemi – or unidentified comparable form
• †Orbignyella
• †Ordogeisonoceras
  • †Ordogeisonoceras amplicameratum
• †Ormoceras
  • †Ormoceras centrale – type locality for species
  • †Ormoceras champlainense – type locality for species
  • †Ormoceras schohariae – type locality for species
• †Orthambonites
  • †Orthambonites acutiplicatus
  • †Orthambonites exfoliata
• †Orthidium
  • †Orthidium lamellosa
  • †Orthidium lamellosum
• †Orthis
  • †Orthis flabellites
  • †Orthis lepidus
  • †Orthis perveta
  • †Orthis praeumbona
  • †Orthis punctostriata
  • †Orthis tenuidens
• †Orthoceras
  • †Orthoceras abruptum
  • †Orthoceras aristides
  • †Orthoceras bassleri
  • †Orthoceras clavatum
  • †Orthoceras lativentrum
  • †Orthoceras lentum
  • †Orthoceras limulurus
  • †Orthoceras luxum
  • †Orthoceras missisquoi
  • †Orthoceras modestum
  • †Orthoceras multicameratum
  • †Orthoceras progressum
  • †Orthoceras rectiannulatum
  • †Orthoceras sayi
  • †Orthoceras vagum
  • †Orthoceras virgulatum
• †Orthodesma
  • †Orthodesma curtum
  • †Orthodesma pulaskiense
• †Orthograptus
  • †Orthograptus pageanus
  • †Orthograptus quadrimucronatus
  • †Orthograptus rivai
  • †Orthograptus ruedemanni
• †Orthonota
  • †Orthonota carinata
  • †Orthonota parvula
  • †Orthonota undulata
• †Orthonychia
  • †Orthonychia concavum
  • †Orthonychia conicum
  • †Orthonychia dentalium
• †Orthospirifer
  • †Orthospirifer mesastrialis
  • †Orthospirifer mesastrialus
  • †Orthospirifer mesatrialis
• †Orthostrophia
  • †Orthostrophia fasciata
• †Orthotetes
• †Otarion
  • †Otarion spinicaudatum
• †Oulodus
  • †Oulodus petila
• †Ovoceras
• †Ozarkina
• †Ozarkodina
  • †Ozarkodina confluens
  • †Ozarkodina hadra
  • †Ozarkodina polinclinata
  • †Ozarkodina sagitta

P

• †Pachecdyceras
  • †Pachecdyceras murale
• †Pachydicta
  • †Pachydicta crassa
• †Pachydictya
  • †Pachydictya acuta
  • †Pachydictya crassa
  • †Pachydictya sheldonensis
• †Pachyphyllum
  • †Pachyphyllum crassicostatum
  • †Pachyphyllum woodmani
• †Pachystrophia – tentative report
• †Pachystylostroma
  • †Pachystylostroma champlainense – type locality for species
  • †Pachystylostroma goodsellense
  • †Pachystylostroma vallum

• 

  Fossil of the trilobite Paciphacops

  †Paciphacops
  • †Paciphacops logani
• †Paedeumias
• †Paeeumias
• †Pagetides
  • †Pagetides elagans
• †Pagodia
  • †Pagodia seelyi – type locality for species
• †Palaeacmaea
  • †Palaeacmaea expansa – type locality for species
  • †Palaeacmaea typica
• †Palaeactina
• †Palaeaster
  • †Palaeaster niagarensis
• †Palaeocapulus
  • †Palaeocapulus acutirostre
• †Palaeocaris – tentative report
  • †Palaeocaris cuylerensis – type locality for species
• †Palaeocyclus
  • †Palaeocyclus ratuloides
  • †Palaeocyclus rotuloides
• †Palaeocystites
  • †Palaeocystites tenuiradiatus
• †Palaeodictyota
• †Palaeoglossa
  • †Palaeoglossa belli
  • †Palaeoglossa perovata
• †Palaeoneilo
  • †Palaeoneilo angusta
  • †Palaeoneilo augusta
  • †Palaeoneilo bisulcata
  • †Palaeoneilo brevis
  • †Palaeoneilo congregata
  • †Palaeoneilo constricta
  • †Palaeoneilo contracta
  • †Palaeoneilo crassa
  • †Palaeoneilo elongata
  • †Palaeoneilo emarginata
  • †Palaeoneilo fecunda
  • †Palaeoneilo filosa
  • †Palaeoneilo maxima
  • †Palaeoneilo muta
  • †Palaeoneilo plana
  • †Palaeoneilo rudis
  • †Palaeoneilo tenuistriata

• 

  Life restoration of the Silurian-Devonian scorpion Palaeophonus

  †Palaeophonus
  • †Palaeophonus osborni – type locality for species
• †Palaeophycus
  • †Palaeophycus striatum
• †Palaeophyllum
  • †Palaeophyllum multicaule
• †Palaeopinna
  • †Palaeopinna flabellum
• †Palaeosaccus
• †Palaeosolen
• †Palaeosolon
  • †Palaeosolon siliqui
• †Palaeozygopleura
  • †Palaeozygopleura attenuata
  • †Palaeozygopleura delphicola
  • †Palaeozygopleura hamiltoniae
  • †Palaeozygopleura laxa – type locality for species
  • †Palaeozygopleura multiplicata – type locality for species
  • †Palaeozygopleura noe – type locality for species
  • †Palaeozygopleura sicula
  • †Palaeozygopleura styliola – type locality for species
• †Palaeschara
  • †Palaeschara incrustans
• †Palaozygopleura
  • †Palaozygopleura hamiltoniae
• †Paleoclosterium
  • †Paleoclosterium leptum
• †Paleocystites
  • †Paleocystites tenuiradiatus
• †Paleodictyota
• †Paleodidymoprium
  • †Paleodidymoprium didymum
• †Paleooedogonium
  • †Paleooedogonium micrum
• †Paleophycus
  • †Paleophycus striatum
• †Paleozygopleura
  • †Paleozygopleura delphicola
• †Paleschara
  • †Paleschara radiata
• †Palmatolepis
  • †Palmatolepis triangularis
• †Panderodus
  • †Panderodus panderi – or unidentified comparable form
  • †Panderodus unicostatus
• †Panenka
  • †Panenka hero
  • †Panenka retusa
• †Parabolbina
• †Parabufina
  • †Parabufina convexa
  • †Parabufina subovalis

• 

  Fossil of the Silurian-Early Devonian eurypterid ("sea scorpion") Paracarcinosoma

  †Paracarcinosoma
  • †Paracarcinosoma scorpionis
• †Paracardium
  • †Paracardium doris
• †Paraceraurus
  • †Paraceraurus ruedemanni
• †Paracolocrinus
  • †Paracolocrinus paradoxicus
• †Paraconularia
• †Paracyclas
  • †Paracyclas arguta
  • †Paracyclas devoniana
  • †Paracyclas elliptica
  • †Paracyclas lirata
  • †Paracyclas rowleyi
  • †Paracyclas rugosa
  • †Paracyclas tenuis
• †Paradakeoceras
  • †Paradakeoceras minor
  • †Paradakeoceras planiventrum
• †Paraechmina
  • †Paraechmina postica
  • †Paraechmina spinosa
• †Paraendoceras
  • †Paraendoceras depressum – type locality for species
  • †Paraendoceras wappingerense – type locality for species

• 

  Fossils of the Silurian-Middle Devonian eurypterid ("sea scorpion") Parahughmilleria

  †Parahughmilleria
  • †Parahughmilleria maria
• †Parallelodon
  • †Parallelodon hamiltoniae
• †Parallelopora
• †Parallelostroma
  • †Parallelostroma foveolatum
  • †Parallelostroma microporum – type locality for species
• †Parapanderodus
  • †Parapanderodus striatus
• †Paraparchites
  • †Paraparchites asymmetrica – type locality for species
• †Paraplethopeltis
  • †Paraplethopeltis carinfera – type locality for species
• †Paraschmidtella
  • †Paraschmidtella paralobata
• †Paraserratodontus
  • †Paraserratodontus costatus

• 

  Assemblage of the Early-Middle Devonian brachiopod Paraspirifer

  †Paraspirifer
  • †Paraspirifer acuminatus
• †Parastrophina
• †Parazyga
  • †Parazyga hirsuta
• †Parodiceras
  • †Parodiceras discoideum
• †Paterula
• †Paucicrura
  • †Paucicrura rogata
• †Paupospira
  • †Paupospira bowdeni
• †Pelagiella
  • †Pelagiella minutissima
  • †Pelagiella primaeva
• †Pentagonia
  • †Pentagonia unisulcata
• †Pentamerella
  • †Pentamerella arata
  • †Pentamerella aruta
  • †Pentamerella pavilionensis
  • †Pentamerella pavillionensis
  • †Pentamerella pericosta
  • †Pentamerella petoskyensis
• †Pentamerus
  • †Pentamerus oblongus
  • †Pentamerus ovalis
• †Periechocrinites

• 

  Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus

  †Periechocrinus
  • †Periechocrinus speciosus – or unidentified comparable form
• †Periodon
  • †Periodon grandis
  • †Periodon primum
• †Perissocrinus – type locality for genus
  • †Perissocrinus papillatus – type locality for species
• †Peronopsis
  • †Peronopsis evansi – type locality for species
  • †Peronopsis primigenea – or unidentified comparable form
• †Perotrilites
  • †Perotrilites conatus – or unidentified comparable form
• †Petasotheca – type locality for genus
  • †Petasotheca minuta – type locality for species
• †Petigurus
  • †Petigurus ellipticus – type locality for species
• †Petrocrania
  • †Petrocrania hamiltoniae
  • †Petrocrania prona

• 

  Fossil of the Devonian trilobite Phacops rana

  †Phacops
  • †Phacops cristata
  • †Phacops triculcatus
  • †Phacops trisulcata
  • †Phacops trisulcatus
• †Phaenopora
  • †Phaenopora clintoni
  • †Phaenopora constellata
  • †Phaenopora ensiformis
  • †Phaenopora explanata
• †Phakelodus
  • †Phakelodus terashimai
• †Phanerotrema
  • †Phanerotrema labrosa – type locality for species
• †Pharciceras
  • †Pharciceras amplexum
• †Phestia
  • †Phestia diversa
  • †Phestia rostellata
• †Philhedra
• †Phipidomella
  • †Phipidomella vanuxemi
• †Phlyctiscapha
  • †Phlyctiscapha subovata
• †Phoenixites
  • †Phoenixites concentricus
• †Pholadella
  • †Pholadella radiata
  • †Pholadella radiatus
• †Pholadomorpha
  • †Pholadomorpha pholadiformis
• †Pholidops
  • †Pholidops linguloides
  • †Pholidops squamiformis
  • †Pholidops squammiformis
• †Pholidostrophia
  • †Pholidostrophia nacrea
  • †Pholidostrophia ovata
• †Phorocephala
  • †Phorocephala setoni
• †Phragmoceras
• †Phragmodus
  • †Phragmodus undatus
• †Phragmolites
  • †Phragmolites compressus
• †Phragmosphaera – type locality for genus
  • †Phragmosphaera incisus
  • †Phragmosphaera lyra – type locality for species
  • †Phragmosphaera natator
  • †Phragmosphaera triliratus – or unidentified comparable form
• †Phthonia
  • †Phthonia cylindrica

• 

  Fossil of the Early Ordovician graptolite Phyllograptus

  †Phyllograptus
• †Phylloporina
  • †Phylloporina asperatastriata
  • †Phylloporina asperatostriata
  • †Phylloporina asperostriata
  • †Phylloporina incepta
• †Physemataspis
  • †Physemataspis insularis
• †Pionoceras
  • †Pionoceras pomponium
  • †Pionoceras vokesi
• †Pionodema
• †Pisocrinus
• †Pittsfordipterus
  • †Pittsfordipterus phelpsae
• †Placentella
  • †Placentella elliptica – or unidentified comparable form
• †Placoblastus
  • †Placoblastus lucina
• †Plaesiomys
  • †Plaesiomys iphigenia
  • †Plaesiomys strophomenoides
• †Platillaenus
  • †Platillaenus erastusi

• 

  Fossilized shell of the Silurian-Early Triassic sea snail Platyceras

  †Platyceras
  • †Platyceras angulatum
  • †Platyceras argo
  • †Platyceras carinatum
  • †Platyceras desmatum
  • †Platyceras erectum
  • †Platyceras gebhardi
  • †Platyceras hemisphericum
  • †Platyceras lineata
  • †Platyceras lineatum
  • †Platyceras niagarense
  • †Platyceras niagarensis
  • †Platyceras rarispinum
  • †Platyceras reflexum
  • †Platyceras rictum
  • †Platyceras turbinata
  • †Platyceras unisulcata
  • †Platyceras ventricosum
  • †Platyceras ventricosus
• †Platyorthis
  • †Platyorthis planoconvexa
• †Platyrachella
• †Platyrochella

• 

  Fossilized shell of the Middle Ordovician-Silurian brachiopod Platystrophia

  †Platystrophia
  • †Platystrophia biforata
  • †Platystrophia biforatus
  • †Platystrophia longicardinalis
  • †Platystrophia lynx
  • †Platystrophia robusta
• †Playfordites
  • †Playfordites tripartitus – or unidentified comparable form
• †Plectambonites
• †Plectatrypa
  • †Plectatrypa nodostriata
• †Plectoceras
  • †Plectoceras jason
  • †Plectoceras jasoni
• †Plectodina
• †Plectodonta
• †Plectonotus
  • †Plectonotus boucoti
  • †Plectonotus trilobita
• †Plectorthis
  • †Plectorthis exfoliata
• †Plectostroma
  • †Plectostroma micum
• †Plethobolbina
  • †Plethobolbina typicalis
• †Plethopeltis
  • †Plethopeltis obtusus
• †Plethorhyncha
• †Plethorhynchia
• †Plethorthis
• †Plethospira
  • †Plethospira cassina – type locality for species

• 

  Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum

  †Pleurodictyum
  • †Pleurodictyum americanum
  • †Pleurodictyum convexa
  • †Pleurodictyum convexum
  • †Pleurodictyum cylindricum
  • †Pleurodictyum cylindricus
  • †Pleurodictyum dividua
  • †Pleurodictyum stylopora
• †Pleuronotus
  • †Pleuronotus decewi
  • †Pleuronotus tioga – type locality for species
• †Pleurorima
  • †Pleurorima kayseri – type locality for species

• 

  Fossilized shell of a Pleurotomaria slit snail

  Pleurotomaria
  • †Pleurotomaria apicialis – type locality for species
• †Plicanoplia
• †Plicoplasia
• †Plinthokonion – tentative report
  • †Plinthokonion psamminon – type locality for species
• †Pliomerops
  • †Pliomerops canadensis
• †Plumalina
• †Podolella
• †Pojetaconcha
  • †Pojetaconcha beecheri
• †Pojetaia
  • †Pojetaia runnegari
• †Poleumita
  • †Poleumita crenulata
  • †Poleumita vernonensis – type locality for species

• 

  Various conodont elements of Polygnathus

  †Polygnathus
• †Polygyrata
  • †Polygyrata hunterensis – type locality for species
• †Polyplacognathus
  • †Polyplacognathus ramosa
• †Polyplectella
  • †Polyplectella mira
• †Polypora
  • †Polypora incepta
• †Ponderodictya
  • †Ponderodictya punctulifera
• †Ponticeras
  • †Ponticeras perlatum
• †Pontobdellopsis
• †Poteriocrinus
  • †Poteriocrinus dignatus
• †Praecardium
• †Praematuratropis – type locality for genus
  • †Praematuratropis ovatus – type locality for species
• †Praewaagenoconcha
  • †Praewaagenoconcha speciosa
• †Prasopora
  • †Prasopora lenticularis
  • †Prasopora sardesoni
  • †Prasopora similatrix
  • †Prasopora simulatrix
• †Primaspis
  • †Primaspis crosotus
  • †Primaspis trentonensis
• †Primitia
• †Primitiella
  • †Primitiella unicornis
• †Primitiopsis
  • †Primitiopsis punctulifera
• †Prionothyris
  • †Prionothyris diobolaris
• †Prismostylus
  • †Prismostylus fibratum
• †Pristeroceras
  • †Pristeroceras timidum
• †Probeloceras
  • †Probeloceras lutheri
• †Probillingsites
  • †Probillingsites inflatus – type locality for species
• †Prochorites
  • †Prochorites alveolatus
• †Productella
  • †Productella arctirostrata
  • †Productella belanskii
  • †Productella boydii
  • †Productella callawayensis
  • †Productella dumosa
  • †Productella navicella
  • †Productella nevicella
  • †Productella perplana
  • †Productella rectispina
  • †Productella speciosa
  • †Productella spinulocosta
• †Proendoceras

• 

  Restoration of the Silurian trilobite Proetus

  †Proetus
  • †Proetus clarus
  • †Proetus corycocus
  • †Proetus corycoeus
  • †Proetus haldemani
  • †Proetus stokesi
• †Prolixocrinus
  • †Prolixocrinus nodocaudis
• †Promourlonia
  • †Promourlonia durhamensis
• †Proplina
  • †Proplina cornutaformis
• †Propora
• †Prosaukia
  • †Prosaukia spinula
• †Proscorpius – type locality for genus
  • †Proscorpius osborni – type locality for species
• †Prosopeionum
  • †Prosopeionum plexum – type locality for species
• †Prosseria
  • †Prosseria grandis
• †Protaster
  • †Protaster stellifer
• †Protaxocrinus
  • †Protaxocrinus annellus
• †Proteoceras
  • †Proteoceras moniliforme
  • †Proteoceras perkinsi
• †Proteokalon
  • †Proteokalon petryi
• †Proterocameroceras
  • †Proterocameroceras brainerdi
• †Prothyris
  • †Prothyris lanceolata
• †Protocalyptraea – type locality for genus
  • †Protocalyptraea marshalli – type locality for species
  • †Protocalyptraea styliophila – type locality for species
• †Protochthonius – type locality for genus
  • †Protochthonius gilboa – type locality for species
• †Protocrisina
• †Protocycloceras
  • †Protocycloceras catulus
  • †Protocycloceras furtivum
  • †Protocycloceras lamarcki
  • †Protocycloceras xerxes
• †Protodouvillina
  • †Protodouvillina inequistrata
  • †Protodouvillina inequistriata
• †Protokionoceras
• †Protolepidodendron
  • †Protolepidodendron gilboense
  • †Protolepidodendron scharianum
• †Protoleptostrophia
  • †Protoleptostrophia concava
  • †Protoleptostrophia lirella
  • †Protoleptostrophia perplana
• †Protomegastrophia
• †Protopanderodus
• †Protoscolex
• †Protozyga
• †Proturritella
  • †Proturritella historicum
• †Protypus
• †Pseudaviculopecten
  • †Pseudaviculopecten fasciculatus
  • †Pseudaviculopecten princeps
• †Pseudoatrypa
  • †Pseudoatrypa devoniana
  • †Pseudoatrypa entilformis
• †Pseudoatrypta
  • †Pseudoatrypta devoniana – or unidentified comparable form
• †Pseudoblothrophyllum
  • †Pseudoblothrophyllum arrectum
  • †Pseudoblothrophyllum helderbergicum
  • †Pseudoblothrophyllum helderbergium
  • †Pseudoblothrophyllum munnsvillium
• †Pseudohornea
  • †Pseudohornea diffusa
• †Pseudohornera
  • †Pseudohornera diffusa
• †Pseudohydnoceras
  • †Pseudohydnoceras erraticum
• †Pseudolingula
  • †Pseudolingula rectilateralis

• 

  Illustration of a fossil of the Silurian arthropod Pseudoniscus

  †Pseudoniscus
• †Pseudooneotodus
  • †Pseudooneotodus bicornis
• †Pseudoplagiothyra
  • †Pseudoplagiothyra praecursor
• †Pseudosphaerexochus
  • †Pseudosphaerexochus approximus
  • †Pseudosphaerexochus satyrus
  • †Pseudosphaerexochus vulcanus
• †Pseudosporochnus
• †Pseudostictoporella
• †Pseudostylodictyon
  • †Pseudostylodictyon lamottense

• 

  Fossil of the primitive Devonian vascular plant Psilophyton

  †Psilophyton
  • †Psilophyton grandis
• †Pteracontiodus
  • †Pteracontiodus bransoni
• †Pterina
  • †Pterina demissa
• †Pterinea
  • †Pterinea emacerata
  • †Pterinea insueta
  • †Pterinea jordani – or unidentified comparable form
  • †Pterinea waylandsmithi – type locality for species
• †Pterinopectan
  • †Pterinopectan undosus
  • †Pterinopectan vertumnus
• †Pterinopecten
  • †Pterinopecten erectus
  • †Pterinopecten hermes
  • †Pterinopecten suborbicularis
  • †Pterinopecten vertumnus
• †Pteriochaenia
  • †Pteriochaenia fragilis
• †Pterochaenia
  • †Pterochaenia fragilis
• †Pterospathodus
  • †Pterospathodus amorphognathoides
• †Pterotheca
  • †Pterotheca expansa

• 

  Restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus

  †Pterygotus
  • †Pterygotus cobbi
  • †Pterygotus juvensis
  • †Pterygotus monroensis
• †Ptilodictya
  • †Ptilodictya plumea
• †Ptilograptus
• †Ptilonaster
  • †Ptilonaster princeps
• †Ptiloporella
• †Ptomatis
  • †Ptomatis patulus – type locality for species
  • †Ptomatis rudis
• †Ptychagnostus
  • †Ptychagnostus elegans
  • †Ptychagnostus punctuosus
• †Ptychaspis
  • †Ptychaspis speciosus
• †Ptychocrinus
  • †Ptychocrinus medinensis
• †Ptychodesma
  • †Ptychodesma knappianum
• †Ptychomphalina
  • †Ptychomphalina lucina

• 

  Fossils of the Cambrian trilobite Ptychoparia

  †Ptychoparia
  • †Ptychoparia matheri – type locality for species
  • †Ptychoparia minuta
• †Ptychopteria
  • †Ptychopteria chemungensis
  • †Ptychopteria elongata
  • †Ptychopteria flabella
  • †Ptychopteria flabellum
  • †Ptychopteria mesacostalis
  • †Ptychopteria proto
  • †Ptychopteria subdecussata
• †Ptychosphaera
  • †Ptychosphaera thalia
• †Pugnoides
  • †Pugnoides pugnus
• †Punctomosea
  • †Punctomosea cristata
• †Punctoprimitia
  • †Punctoprimitia subaequalis
• †Pustulatia
  • †Pustulatia pustulosa
• †Pyrenmoeus
  • †Pyrenmoeus cuneatus
• †Pyrenomoeus
  • †Pyrenomoeus cuneatus
• †Pyrgopostibulla – type locality for genus
  • †Pyrgopostibulla belli – type locality for species
• †Pyrocystites
• †Pyronema

Q

• †Quasillites
  • †Quasillites angulatus
  • †Quasillites subobliquus

R

• †Radnoria
• †Rafinesquina
  • †Rafinesquina alternata
  • †Rafinesquina deltoidea
  • †Rafinesquina mucronata
  • †Rafinesquina nasuta
  • †Rafinesquina obscura
  • †Rafinesquina praecursor
  • †Rafinesquina prestonensis
• †Raphistoma
  • †Raphistoma stamineum
  • †Raphistoma striatum
• †Raphistomina
  • †Raphistomina undulata

• 

  Fossil of the Early Ordovician-Permian benthic alga Receptaculites

  †Receptaculites
  • †Receptaculites monticulatus – or unidentified related form
• †Redstonia
  • †Redstonia knaeckei – type locality for species
• †Reimannia
  • †Reimannia aldenense
  • †Reimannia aldenese
• †Rellimia
  • †Rellimia thomsonii
• †Remopleuridella – tentative report
  • †Remopleuridella obtusa
• †Remopleurides
  • †Remopleurides canadensis
• †Remopleuridiella – tentative report
  • †Remopleuridiella obtusa – type locality for species
• †Rensselaeria
  • †Rensselaeria elongata – or unidentified comparable form
• †Rensselaerina – tentative report
• †Reptaria
  • †Reptaria stolonifera
• †Resserella
  • †Resserella elegantula
• †Reteocrinus
  • †Reteocrinus stellaris
• †Reteograptus
• †Reteporina
• †Retichonetes
  • †Retichonetes obscurus – or unidentified related form
  • †Retichonetes setigerus
• †Reticularia
  • †Reticularia bicastata
  • †Reticularia bicostata
  • †Reticularia biocostata
• †Reticularograptus
  • †Reticularograptus retiforme
• †Reticulograptus
  • †Reticulograptus retiforme
• †Retiolites
  • †Retiolites geinitzianus
  • †Retiolites venosus
• †Retispira
  • †Retispira leda
  • †Retispira otsego – type locality for species
  • †Retispira repertus – type locality for species
• †Retusotriletes
  • †Retusotriletes goensis
  • †Retusotriletes rotundus
• †Rhabdosporites
  • †Rhabdosporites langi
  • †Rhabdosporites langii
• †Rhabdostropha
• †Rhacophyton
  • †Rhacophyton ceratangium
• †Rhinidictya
  • †Rhinidictya bryozoan
  • †Rhinidictya fenestrata

• 

  Fossil of the Silurian eurypterid ("sea scorpion") Rhinocarcinosoma

  †Rhinocarcinosoma
  • †Rhinocarcinosoma cicerops
• †Rhinopora
  • †Rhinopora tuberculosa
  • †Rhinopora verrucosa
  • †Rhinopora verrucus
• †Rhipidomella
  • †Rhipidomella circulus
  • †Rhipidomella cyclas
  • †Rhipidomella hybrida
  • †Rhipidomella hybridia
  • †Rhipidomella leucosia
  • †Rhipidomella penelope
  • †Rhipidomella trigona
  • †Rhipidomella vanuxemi
• †Rhipidomelloides
  • †Rhipidomelloides oblata
• †Rhipidothyris
  • †Rhipidothyris lepida
  • †Rhipidothyris mulitplicata
  • †Rhipidothyris plicata
• †Rhodesognathus
  • †Rhodesognathus elegans
• †Rhombopora
  • †Rhombopora rhombifera
• †Rhombotrypa
  • †Rhombotrypa spinulifera
• †Rhymokalon
  • †Rhymokalon trichium

• 

  Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella

  †Rhynchonella
  • †Rhynchonella bidens
  • †Rhynchonella bidentata
  • †Rhynchonella emacerata
  • †Rhynchonella formosa
• †Rhynchospirina
• †Rhynchotrema
  • †Rhynchotrema increbescens
• †Rhynchotreta
  • †Rhynchotreta americana
  • †Rhynchotreta robusta
• †Rhynidictya
  • †Rhynidictya fenestrata
• †Rhyssochonetes
  • †Rhyssochonetes aurora
  • †Rhyssochonetes filicostatus
• †Rhytimia
  • †Rhytimia buffaloensis – or unidentified comparable form
• †Rhytimya
• †Ribeiria
  • †Ribeiria taylori – type locality for species
• †Richina
  • †Richina selenicristata – type locality for species
• †Rimouskia
• †Ripidiorhynchus – tentative report
• †Robergiella
  • †Robergiella brevilingua – or unidentified comparable form
• †Roemerella
  • †Roemerella grandis
• †Romingeria
• †Rominigeria
• †Romnigeria
• †Ropalonaria
• †Rossodus
  • †Rossodus manitouensis
• Rostricellula
  • †Rostricellula major
  • †Rostricellula plena
  • †Rostricellula pristina
• †Roundyella – tentative report
  • †Roundyella concentrica – type locality for species
• †Rudolfoceras
  • †Rudolfoceras cornuoryx
• †Ruedemannia
  • †Ruedemannia lirata
  • †Ruedemannia trilix
• †Ruedemannipterus
  • †Ruedemannipterus stylonuroides

• 

  Fossil of the arthropod burrow ichnogenus Rusophycus

  †Rusophycus
  • †Rusophycus biloba
  • †Rusophycus pudicum
  • †Rusophycus subangulatum

S

• †Saccarchites
• †Saccocrinus
• †Salopina
  • †Salopina type locality for species A – informal
• †Sandbergeroceras
  • †Sandbergeroceras enfieldense – type locality for species
  • †Sandbergeroceras syngonum
• †Sanguinolites
  • †Sanguinolites contractus
  • †Sanguinolites cuneatus
  • †Sanguinolites solenoides
  • †Sanguinolites tiogensis
  • †Sanguinolites truncatus
• †Sapphicorhynchus
  • †Sapphicorhynchus sappho
• †Saratogia
• †Sawdonia
  • †Sawdonia ornata
• †Scalites
  • †Scalites angulatus
• †Scalpellodus
  • †Scalpellodus longipinnatus
• †Scapanocrinus
  • †Scapanocrinus muricatus
• †Scaptina
  • †Scaptina incuda – type locality for species
• †Scendium
  • †Scendium pyramidale

• 

  Fossils of the Cambrian mollusc Scenella

  †Scenella
  • †Scenella montrealensis
  • †Scenella pretensa
  • †Scenella robusta
• †Scenophyllum
  • †Scenophyllum conigerum
• †Schindewolfoceras
  • †Schindewolfoceras chemungense
  • †Schindewolfoceras equicostatum – or unidentified related form
• †Schizambon
  • †Schizambon duplicimuratum
• †Schizo (genus)
• †Schizocrania
  • †Schizocrania filosa
• †Schizocrinus
  • †Schizocrinus nodosus
• †Schizodus
  • †Schizodus chemungensis
• †Schizonema
• †Schizopea
  • †Schizopea typica – type locality for species
• †Schizophoria
  • †Schizophoria impressa
  • †Schizophoria mulistriata
  • †Schizophoria multistriata
  • †Schizophoria striatula
  • †Schizophoria tioga
  • †Schizophoria tulliensis
  • †Schizophoria with
• †Schizopodium
  • †Schizopodium mummii
• †Schizotreta
  • †Schizotreta tenuilamellata
• †Schmidtella
  • †Schmidtella crassimarginata
• †Schuchertella
  • †Schuchertella arctostriata
  • †Schuchertella arctostriatus
  • †Schuchertella elegans
  • †Schuchertella interstriata
  • †Schuchertella marylandica – or unidentified comparable form
  • †Schuchertella pandora
  • †Schuchertella parva
  • †Schuchertella subplana
  • †Schuchertella sulcifer
  • †Schuchertella tenuis
  • †Schuchertella woolworthanus
• †Schuchetella
  • †Schuchetella arctostriatus
• †Scolopodus
  • †Scolopodus insculptus
• †Scutellum
  • †Scutellum niagarensis
• †Scyphocrinites
• †Seelyoceras
  • †Seelyoceras raei
• †Semiacontiodus
  • †Semiacontiodus iowensis
  • †Semiacontiodus nogamii
• †Semicoscinium
  • †Semicoscinium tenuiceps
• Serpula
• †Serpulites
• †Serpulospira
  • †Serpulospira eboracensis – type locality for species
  • †Serpulospira laxus
• †Serrodiscus
• †Serrulacaulis
  • †Serrulacaulis furcatus
• †Serulacaulis
  • †Serulacaulis furcatus
• †Shumardia

• 

  Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria

  †Sigillaria
  • †Sigillaria gilboensis
• †Silurovelella – type locality for genus
  • †Silurovelella casteri – type locality for species
• †Sinochonetes
  • †Sinochonetes lepidus
• †Sinuites
  • †Sinuites cancellatus – type locality for species
• †Sinuitina
  • †Sinuitina acutilira
  • †Sinuitina brevilineatus
• †Sinuopea
  • †Sinuopea emminencis – type locality for species
  • †Sinuopea parva – type locality for species
• †Siphonophrentis
  • †Siphonophrentis gigantea
• †Siphonophretis
  • †Siphonophretis variabilis
• †Skenidioides
  • †Skenidioides pyramidale
  • †Skenidioides pyramidalis
• †Skenidium
  • †Skenidium insignis – or unidentified comparable form
  • †Skenidium pyramidale
  • †Skenidium pyramidalis

• 

  Life restoration of the Silurian eurypterid ("sea scorpion") Slimonia

  †Slimonia
• †Solenopleura
• †Solenopora
  • †Solenopora compacta
• †Sowerbyella
  • †Sowerbyella curdvillensis
  • †Sowerbyella kayi
  • †Sowerbyella senaria
  • †Sowerbyella sericea
  • †Sowerbyella transversalis
• †Spathella
  • †Spathella typica
• †Spatiopora
  • †Spatiopora maculata
• †Spatipora
  • †Spatipora maculata

• 

  Fossil of the Middle Ordovician-Silurian trilobite Sphaerexochus

  †Sphaerexochus
  • †Sphaerexochus parvus
  • †Sphaerexochus valcourensis
• †Sphaerocoryphe
  • †Sphaerocoryphe goodnovi
  • †Sphaerocoryphe robusta
• †Sphaeromanticoceras
  • †Sphaeromanticoceras oxy
  • †Sphaeromanticoceras rhynchostomum
  • †Sphaeromanticoceras rickardi
• †Sphaerospongia
  • †Sphaerospongia tessellata – or unidentified related form
• †Sphenophragmus
  • †Sphenophragmus nanus
• †Sphenosphaera
  • †Sphenosphaera fiscellostriata
• †Sphenotreta
  • †Sphenotreta acutirostris
• †Spinatrypa
  • †Spinatrypa hystrix
  • †Spinatrypa spinosa
• †Spinocespitosus
  • †Spinocespitosus parallelus
• †Spinocyrtia
  • †Spinocyrtia granulosa
  • †Spinocyrtia macbridei
  • †Spinocyrtia marcyi
• †Spinocyrtina
  • †Spinocyrtina granulosa
• †Spinoplasia
  • †Spinoplasia gaspensis – or unidentified comparable form
• †Spinozonotriletes – tentative report
  • †Spinozonotriletes naumovii – or unidentified comparable form
• †Spinulicosta
  • †Spinulicosta spinulicosta
• †Spinulocosta
  • †Spinulocosta spinulocosta
• †Spinyplatyceras
  • †Spinyplatyceras dumosum
  • †Spinyplatyceras fornicatum

• 

  Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer

  †Spirifer
  • †Spirifer anchiasper
  • †Spirifer anchiaspirifer
  • †Spirifer aroostookensis
  • †Spirifer crispatus
  • †Spirifer crispus
  • †Spirifer duodenarius
  • †Spirifer eudora
  • †Spirifer macra
  • †Spirifer macrothyris
  • †Spirifer macrus
  • †Spirifer marcyi
  • †Spirifer mesicostalis
  • †Spirifer mesistrialis
  • †Spirifer niagarensis
  • †Spirifer posterus
  • †Spirifer raricosta
  • †Spirifer repertus
  • †Spirifer sculptilis
  • †Spirifer subcuspidatus
  • †Spirifer sulcata
  • †Spirifer sulcatus
  • †Spirifer varicosa
  • †Spirifer varicosta
  • †Spirifer williamsi
• †Spirobis
• †Spirobus
• †Spirodentalium – tentative report
• †Spirophyton

• 

  Fossil of the burrow ichnogenus Spirorhaphe

  †Spiroraphe
  • †Spiroraphe galtensis
• Spirorbis
  • †Spirorbis laxa
• †Spyroceras
  • †Spyroceras crotalum
  • †Spyroceras geneva
  • †Spyroceras nuntium
• †Staurograptus
• †Stegerhynchus
  • †Stegerhynchus acinus
  • †Stegerhynchus neglectum
  • †Stegerhynchus neglectus
• †Stenokoleos
  • †Stenokoleos bifidus
  • †Stenokoleos holmesii
• †Stenoloron
  • †Stenoloron areyi – type locality for species
• †Stenopareia
  • †Stenopareia globosus
• †Stenopora
  • †Stenopora fibrosa
  • †Stenopora patula
• †Stenoscisma
• †Stephanocrinus
  • †Stephanocrinus angulatus
  • †Stephanocrinus gemmiformis
• †Stereolasma
  • †Stereolasma rectum
• †Stereospyroceras
  • †Stereospyroceras clintoni
• †Steriolasma
  • †Steriolasma rectum
• †Steroolasma
  • †Steroolasma rectum
• †Stewartophyllum
  • †Stewartophyllum intermittens
• †Stictopora
  • †Stictopora blackensis
  • †Stictopora fenestrata
  • †Stictopora labyrintha
  • †Stictopora labyrinthica
• †Stictoporella
• †Stictotrypa
  • †Stictotrypa punctipora
• †Stigmatella
• †Stipatocrinus
• Stomatopora
• †Straelenia
• †Straparolis
• †Straparollina
  • †Straparollina hudsoni
• †Straparollus
  • †Straparollus clymenioides
  • †Straparollus planodiscus
• †Strataster
  • †Strataster maciverorum – type locality for species
• †Streblocrinus – type locality for genus
  • †Streblocrinus brachiatus – type locality for species
• †Strepsodiscus
  • †Strepsodiscus hoyti
• †Streptelasma
  • †Streptelasma corniculum
• †Strepulites
  • †Strepulites divectus – type locality for species
• †Striacoceras
  • †Striacoceras typum
• †Striatochonetes
  • †Striatochonetes flexuosus
  • †Striatochonetes flexuousus
  • †Striatochonetes setigera
  • †Striatochonetes setigerus
• †Striatopora
  • †Striatopora flexuosa
• †Striatostyliolina
• †Stricklandia
• †Strigigenalis
  • †Strigigenalis cassinensis
• †Striispirifer
  • †Striispirifer niagarensis
• †Strobeus
  • †Strobeus onondagaensis
• †Stromatocerium
  • †Stromatocerium rugosum
• †Stromatopora
  • †Stromatopora constellata
• †Strophalosia
  • †Strophalosia truncata
• †Stropheodonta
  • †Stropheodonta demissa
• †Strophochonetes
  • †Strophochonetes cornutus
• †Strophodonta
  • †Strophodonta demissa

• 

  Fossilized shell of the Ordovician-Silurian brachiopod Strophomena

  †Strophomena
  • †Strophomena acutiradiata
  • †Strophomena conradi
  • †Strophomena convexa
  • †Strophomena corrugata
  • †Strophomena crassa
  • †Strophomena deflecta
  • †Strophomena inaequistriata
  • †Strophomena incurvata
  • †Strophomena inequiradiata
  • †Strophomena iowensis
  • †Strophomena orthididea
  • †Strophomena pentagonia
  • †Strophomena profunda
  • †Strophomena subplana
• †Strophoneila
  • †Strophoneila punctulifera
• †Strophonella
  • †Strophonella ampla
  • †Strophonella headleyana – or unidentified comparable form
  • †Strophonella leavenworthana
  • †Strophonella patenta
  • †Strophonella punctulifera
  • †Strophonella striata
• †Strophostylus
  • †Strophostylus cancellata
  • †Strophostylus fitchi – type locality for species
  • †Strophostylus rotundata – type locality for species
• Stylaraea
  • †Stylaraea parva
• †Stylioina
  • †Stylioina fissurella
• †Styliolina
  • †Styliolina fissurella
• †Styliolinid
• †Stylonema
  • †Stylonema robusta – type locality for species

• 

  Life restoration of the Devonian eurypterid ("sea scorpion") Stylonurus

  †Stylonurus
• †Subligaculum
  • †Subligaculum aculeatus – type locality for species
  • †Subligaculum laciniosum
• †Subretepora
• †Subulites
  • †Subulites elongatus
  • †Subulites prolongata
• †Suecoceras
  • †Suecoceras marcoui
• †Sulcella
  • †Sulcella emicatusa – type locality for species
• †Sulcoretepora
  • †Sulcoretepora inscissurata
• †Sulcoretopera
• †Sulcoretopora
  • †Sulcoretopora incisurata – or unidentified comparable form
• †Svalbardia
  • †Svalbardia banksii
• †Syaptocrinus
  • †Syaptocrinus nintius
• †Symphysurina
  • †Symphysurina convexa
  • †Symphysurina myopia – type locality for species
• †Synaptocrinus
  • †Synaptocrinus nuntius
• †Synaptophyllum
  • †Synaptophyllum simcoense
• †Synbathocrinus
  • †Synbathocrinus canandaigua
• †Synphoria – report made of unidentified related form or using admittedly obsolete nomenclature
• †Synphoroides
  • †Synphoroides pleuroptyx
• †Syringaxon
  • †Syringaxon rudis

• 

  Fossil of the Devonian tabulate coral Syringopora

  †Syringopora

T

• †Tabulophyllum
  • †Tabulophyllum orientale

• 

  Fossils of the Devonian plant stem morphogenus Taeniocrada

  

  Fossils of the Devonian plant stem morphogenus Taeniocrada

  †Taeniocrada
  • †Taeniocrada stilesvillensis
• †Taeniopora
  • †Taeniopora exigua
• †Taineopora
• †Taonurus
  • †Taonurus caudagalli
• †Tarphyceras
  • †Tarphyceras clarkei
  • †Tarphyceras farnsworthi
  • †Tarphyceras multicameratum
• †Technophorus
  • †Technophorus cancellatus – type locality for species
• †Tellinopsis
  • †Tellinopsis subemarginata
  • †Tellinopsis subemargula

• 

  Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites

  †Tentaculites
  • †Tentaculites bellulus
  • †Tentaculites elongatus
  • †Tentaculites gracilis
  • †Tentaculites gyracanthus
  • †Tentaculites minutus
  • †Tentaculites scalariformis
  • †Tentaculites scaleriformis
  • †Tentaculites simmondsi
  • †Tentaculites spiculus
• †Tetradium
  • †Tetradium cellulosum
• †Tetranodoceras
  • †Tetranodoceras transversum
• †Tetranota
  • †Tetranota bidorsata
• †Tetrasacculus
  • †Tetrasacculus magnivelatus – or unidentified comparable form
  • †Tetrasacculus paeneteichus – type locality for species

• 

  Diagram of the branches of the Middle-Late Devonian vascular plant Tetraxylopteris

  †Tetraxylopteris
  • †Tetraxylopteris BR4
  • †Tetraxylopteris schmidtii
• †Thaerocrinus
  • †Thaerocrinus crenatus
• †Thalamocrinus
• †Thaleops
  • †Thaleops longispina – type locality for species
  • †Thaleops ovata
  • †Thaleops punctata
  • †Thaleops raymondi
• †Thamnopora
• †Thamnoptychia
  • †Thamnoptychia limbata
  • †Thamnoptychia ornata
  • †Thamnoptychia romingeri
• †Thiemella
  • †Thiemella danbyi
  • †Thiemella danybi
  • †Thiemella leonensis
• †Thlipsurella – tentative report
• †Thylacocrinus
  • †Thylacocrinus clarkei
• †Tormosocrinus
  • †Tormosocrinus furberi
• †Tornoceras
  • †Tornoceras arcuatum
  • †Tornoceras typum – or unidentified comparable form
  • †Tornoceras uniangulare
• †Tremanotus
  • †Tremanotus angustata
  • †Tremanotus profundus – type locality for species
• †Trematis
  • †Trematis terminalis
• †Trematopora
  • †Trematopora tuberculata
  • †Trematopora tuberculosa
• †Trematospira
  • †Trematospira camura
  • †Trematospira gibbosa
  • †Trematospira perforata – or unidentified comparable form

• 

  Fossil preserving limbs and antennae as pyrite (fool's gold) of the underside of the Late Ordovician trilobite Triarthrus

  †Triarthrus
  • †Triarthrus becki
  • †Triarthrus eatoni
• †Tricornina
• †Triendoceras
  • †Triendoceras orthoseptatum
• †Trigonodictya
  • †Trigonodictya acuta
• †Trigonograptus
• †Trigrammaria
• †Triloboxylon
  • †Triloboxylon arnoldii
  • †Triloboxylon ashlandicum
• †Trimerus
  • †Trimerus delphinocephalus
• †Triplesia
• †Tripteroceras
  • †Tripteroceras cariniferum – type locality for species
• †Tritonophon
  • †Tritonophon trilobatus

• 

  Fossilized shell of the Middle-Late Devonian nautiloid cephalopod Trochoceras

  †Trochoceras
• †Trocholites
  • †Trocholites ammonius
  • †Trocholites gracilis
  • †Trocholites ruedemanni
• †Trochonema
  • †Trochonema dispar
  • †Trochonema rectangularis
• †Trochonemella
  • †Trochonemella knoxvillensis
• †Tropidocoryphe
  • †Tropidocoryphe richterorum – type locality for species
• †Tropidodiscus
  • †Tropidodiscus curvilineatus
• †Tropidoleptus
  • †Tropidoleptus carinatus
• †Tropodus
  • †Tropodus comptus
• †Truncalosia
  • †Truncalosia truncata
• †Truyolsoceras
  • †Truyolsoceras bicostatum – type locality for species

• 

  Illustration of a fossilized shell in multiple views of the Silurian monoplacophoran mollusc Tryblidium reticulatum. Head region is to the left.

  †Tryblidium
• †Tryplasma
  • †Tryplasma fascicularium – type locality for species
• †Tubulibairdia
  • †Tubulibairdia windomensis
• †Tullypothyridina
  • †Tullypothyridina venestula
• †Tylothyris
  • †Tylothyris clarksvillensis
  • †Tylothyris mesa
  • †Tylothyris mesacostalis
  • †Tylothyris mesicostalis
  • †Tylothyris novamexicana
  • †Tylothyris pauliformis
• †Tyserella
  • †Tyserella pauliformis
• †Tytthocrinus
  • †Tytthocrinus arcarius – type locality for species

U

• †Ulrichia
  • †Ulrichia acricula
  • †Ulrichia fragilis
  • †Ulrichia illinearis
  • †Ulrichia spinifera
  • †Ulrichia ventura – type locality for species
• †Ulrichodina
  • †Ulrichodina abnormalis
• †Ulrichostylus
• †Uncinulus
  • †Uncinulus abruptus
  • †Uncinulus mutabilis
  • †Uncinulus nucleolatus
  • †Uncinulus pyramidatus
• †Unitrypa
• †Uromystrum
  • †Uromystrum brevispinum
  • †Uromystrum minor

V

• †Vaginoceras
  • †Vaginoceras oppletum
• †Valcourea
  • †Valcourea strophomenoides
• †Valcouroceras
  • †Valcouroceras bovinum
  • †Valcouroceras cyclops
  • †Valcouroceras elongatum – type locality for species
  • †Valcouroceras obesum
  • †Valcouroceras tenuiseptum
• †Vaningenoceras
  • †Vaningenoceras indomitum
  • †Vaningenoceras styliforme
• †Vanuxemia
  • †Vanuxemia limbata
• †Variabiloconus
  • †Variabiloconus bassleri
  • †Variabiloconus lineatus
• †Vassaroceras
  • †Vassaroceras henrietta – type locality for species
• †Velibeyrichia
• †Vermiforafacta
  • †Vermiforafacta rollinsi
• †Vermiforichnus
  • †Vermiforichnus clarkei
• †Vernonaspis
• †Vertumnia
  • †Vertumnia reversa
• †Vetupraeca
  • †Vetupraeca duplicata
  • †Vetupraeca vetusta – type locality for species
• †Viriatellina
• †Vogdesia
  • †Vogdesia bearsi
  • †Vogdesia obtusus

W

• 

  Fossilized head of the Silurian eurypterid ("sea scorpion") Waeringopterus

  †Waeringopterus
  • †Waeringopterus cumberlandicus
  • †Waeringopterus vernonensis
• †Walcottoceras
• †Walliserodus
  • †Walliserodus sancticlairi
• †Warrenella
  • †Warrenella laevis
  • †Warrenella magna
• †Wellsites
  • †Wellsites tynani
  • †Wellsites williamsi – type locality for species
• †Whidbornella
  • †Whidbornella hirsuta
  • †Whidbornella lachrymosa
• †Whiteavsia
  • †Whiteavsia expansa
  • †Whiteavsia undata
• †Whitfieldella
  • †Whitfieldella cylindrica
  • †Whitfieldella intermedia
  • †Whitfieldella naviformis
  • †Whitfieldella naviormis
  • †Whitfieldella nitida
  • †Whitfieldella oblata
• †Whitfieldia – tentative report
• †Whitfieldoceras
  • †Whitfieldoceras lenticontractum – type locality for species
• †Wurmiella
  • †Wurmiella excavata

X

• †Xenocladia
  • †Xenocladia medullosina
• †Xystostrophia
  • †Xystostrophia woolworthana

Y

• 

  Life restoration of the probable Cambrian mollusc Yochelcionella

  †Yochelcionella
  • †Yochelcionella greenlandica
• †Yochelsonella – type locality for genus
  • †Yochelsonella compressa – type locality for species
• †Yorba

Z

• †Zaphrenthis
  • †Zaphrenthis bilateralis
  • †Zaphrenthis turbinata
• †Zittelloceras
  • †Zittelloceras praecedens – type locality for species

• 

  Fossil of the feeding trace ichnogenus Zoophycos

  †Zoophycos
• †Zostocrinus
  • †Zostocrinus ornatus
• †Zygobolba
  • †Zygobolba crta
  • †Zygobolba curta
  • †Zygobolba decora
  • †Zygobolba elongata – tentative report
  • †Zygobolba excavata
  • †Zygobolba inflata
  • †Zygobolba intermedia
  • †Zygobolba oblonga
  • †Zygobolba prolixa
  • †Zygobolba rectangula
  • †Zygobolba robusta
• †Zygobolbina
  • †Zygobolbina conradi
• †Zygosella
  • †Zygosella vallata – or unidentified comparable form
• †Zygospira
  • †Zygospira modesta

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.