Graphoceras

Graphoceras
Temporal range: Aalenian–Bajocian[1]
Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Cephalopoda
Subclass:†Ammonoidea
Order:†Ammonitida
Family:†Graphoceratidae
Subfamily:†Graphoceratinae
Genus:†Graphoceras
Buckman, 1898

Graphoceras is an extinct ammonite genus included in the hildoceratacean family Graphoceratidae that lived during the Aalenian and Bajocian stages, Middle Jurassic in what is now Europe, north Africa, and Iran.[2]

Graphoceras produced a compressed, involute shell with a raised umbilical edge and sinuous ribbing.

References

  1. ↑ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2008-05-07. Retrieved 2017-10-18.
  2. ↑ "Paleobiology Database - Graphoceras". Retrieved 2017-10-19.
  • Arkell et al., 1957. Mesozoic Ammonoidea (L264), Treatise on Invertebrate Paleontology Part L. Geological Society of America and University of Kansas Press.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.