Caumontisphinctes Temporal range:
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Superfamily: | Perkinsonatoidea
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Family: | Perkinsoniidae
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Genus: | Caumontisphinctes
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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.