Neocomites is a genus of ammonite from the Lower Cretaceous, Berriasian to Hauterivian,[1] and type genus for the Neocomitidae.[3]

Neocomites
Temporal range: Berriasian-Hauterivian[1]
~145–130 Ma
Fossil of Neocomites neocomiensis from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Neocomitidae
Subfamily: Neocomitinae
Genus: Neocomites
Uhlig, 1905
Species[2]
[clarification needed]
  • N. (Eristavites)
  • N. (Neocomites)
  • N. (Teschenites)
  • N. (Varlheideites)

Description

edit

The shell of Neocomites is fairly involute and compressed with flattish sides; covered with flexuous ribs that branch in small sheaves from faint umbilical tubercles, in some branching again or intercaled further out on the whorls, ending in small oblique bullae in either side of a smooth flat venter. Ribs may cross the venter transversely on later whorls. Sutures have deep 1st lateral lobes.

Distribution

edit

Neocomites has a fairly widespread distribution and has been found in such places as central and southern Europe, North Africa, Madagascar, northern India, Borneo, Sumatra, Texas, Mexico, Colombia (Macanal Formation, Eastern Ranges),[4] Peru, and Argentina.[2]

References

edit
  1. ^ a b Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
  2. ^ a b "Paleobiology Database - Neocomites". Retrieved 2014-06-23.
  3. ^ Wright, C. W. with Callomon, J.H. and Howarth, M.K. (1996), Mollusca 4 Revised , Cretaceous Ammonoidea, vol. 4, in Treatise on Invertebrate Paleontology, Part L (Roger L. Kaesler et аl. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, p. 60.
  4. ^ Piraquive et al., 2011, p.204

Bibliography

edit
edit