Theelia

Theelia is an extinct genus of sea cucumbers that existed from 312 to 40.4 million years ago (Middle Pennsylvanian to the Lutetian age).

Theelia Temporal range:
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Holothuroidea
Subclass:	Paractinopoda
Order:	Apodida
Family:	Chiridotidae
Genus:	†Theelia Schlumberger 1890
Type species
†Chirodota undulata Schlumberger, 1888
Species
See text
Synonyms
†Chiridotites Deflandre-Rigaud, 1951

Fossil sclerites of Theelia are found worldwide.

Taxonomy

Numerous species are assigned to the genus Theelia, they include the following:

• †Theelia alta Speckmann 1968
• †Theelia alveata Mostler and Rahimi-Yazd 1976
• †Theelia anguinea Mostler 1971
• †Theelia conglobata Mostler 1971
• †Theelia convexa Whidborne 1883
• †Theelia crassidentata Deflandre-Rigaud 1950
• †Theelia dentata Górka and Luszczewska 1969
• †Theelia doreckae Kozur and Mostler 1971
• †Theelia dzhulfaensis Mostler and Rahimi-Yazd 1976
• †Theelia fastigata Mostler 1972
• †Theelia fissa Mostler 1971
• †Theelia florida Frizzell and Exline 1955
• †Theelia guembeli Kristan-Tollmann 1963
• †Theelia heptalampra (Bartenstein, 1936)
• †Theelia hexacneme Summerson and Campbell 1958
• †Theelia immisorbicula Mostler 1968
• †Theelia koeveskalensis Kozur and Mostler 1971
• †Theelia kutscheri Reich, 2003
• †Theelia lanceolata (Schlumberger, 1890)
• †Theelia lata Kozur and Mostler 1971
• †Theelia latimarginata Mostler 1971
• †Theelia liptovskaensis Gazdzicki et al. 1978
• †Theelia mesopermiana Kozur and Mostler 1989
• †Theelia monicae Mostler and Rahimi-Yazd 1976
• †Theelia mortenseni (Deflandre-Rigaud, 1951)
• †Theelia multiplex Speckmann 1968
• †Theelia norica Mostler 1969
• †Theelia petasiformis Kristan-Tolmann 1964
• †Theelia planata Mostler 1968
• †Theelia polydenticulata Mostler and Parwin 1973
• †Theelia praeacuta Mostler and Rahimi-Yazd 1976
• †Theelia praenorica Kozur and Mock 1972
• †Theelia praeseniradiata Kozur and Mock 1972
• †Theelia pseudoplanata Kozur and Mock 1972
• †Theelia seniradiata Zankl 1966
• †Theelia serta Speckmann 1968
• †Theelia sinaiensis Said and Barakat 1958
• †Theelia speciosa (Deflandre-Rigaud, 1946)
• †Theelia staurolithensis Kristan-Tolmann 1972
• †Theelia stellifera Zankl 1966
• †Theelia synapta Gilliland 1992
• †Theelia teneromarginata Mostler 1971
• †Theelia terquemi (Deflandre-Rigaud, 1951)
• †Theelia trammeri Gazdzicki et al. 1978
• †Theelia undata Mostler 1968
• †Theelia undulata (Schlumberger, 1890)
• †Theelia variabilis Zankl 1966
• †Theelia wartensis Garbowska and Wierzbowski 1967
• †Theelia zawidzkae Kozur and Mock 1972