Graphoceras
Appearance
Graphoceras Temporal range:
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Genus: | Graphoceras Buckman, 1898
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Graphoceras is an extinct ammonite genus included in the hildoceratacean family Graphoceratidae that lived during the Bajocian stage, 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
- Notes
- ^ 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.
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- Bibliography
- Arkell, et al., 1957. Mesozoic Ammonoidea (L264), Treatise on Invertebrate Paleontology Part L. Geological Society of America and University of Kansas Press.