Caumontisphinctes
Genus of molluscs (fossil)
| Caumontisphinctes Temporal range: Bajocian[1] PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Superfamily: | Perkinsonatoidea |
| Family: | Perkinsoniidae |
| Genus: | Caumontisphinctes |
Caumontisphinctes is an ammonoid genus from the ammonitid superfamily Perkinsonatoidea that lived during the Bajocian stage of the Middle Jurassic.[1]
Chaumontisphinctis, named by Buckman, is like the genus Perisphinctis in being compressed with an ovoid whorl section but perkinsoniid in having sharp ribbing, a smooth or grooved venter, and tubercles commonly developed at bifurcation points on the ribs and at the ventral edge or on the venter.
References
- ^ a b 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.
- Treatise on Invertebrate Paleontology, Part L Ammonoidea (L309); Geological Society of America and Univ of Kansas press, 5th printing, 1990
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