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Involuticeras

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Involuticeras
Temporal range: Kimmeridgian[2]
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Superfamily:
Perisphinctoidea
Family:
Perisphinctidae
Genus:
Involuticeras [1]

Quenstedt, 1846

Involuticeras is a perisphinctoid ammonite belonging to the Aulacostephanininae from the Upper Jurassic of Europe and possibly Mexico. The shell is involute, moderately compressed, with a rounded and ribbed venter. The genus is similar in general form to Aulacostephanus and Epicephalites.

References

  1. ^ "Paleobiology Database - Involuticeras". Retrieved 2017-10-19.
  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,(1957), Mesozoic Ammonoidea, p. L324.


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