Caumontisphinctes
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Template:Short description Template:Italic title Template:Taxobox/core 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
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- Treatise on Invertebrate Paleontology, Part L Ammonoidea (L309); Geological Society of America and Univ of Kansas press, 5th printing, 1990