| Caumontisphinctes Temporal range: | |
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| 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
- 1 2 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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