Caumontisphinctes

Caumontisphinctes Temporal range: Bajocian PreЄ Є O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Superfamily:	Perkinsonataceae
Family:	Perkinsonidae
Genus:	Caumontisphinctes

Caumontisphinctes is an ammonoid genus from the ammonitid superfamily Perkinsonataceae that lived during the Bajocian stage of the Middle Jurassic.

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

• Treatise on Invertebrate Paleontology, Part L Ammonoidea (L309); Geological Society of America and Univ of Kansas press, 5th printing, 1990