Involuticeras
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Involuticeras [2]

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. โ†‘ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1โ€“560. Archived from the original on 2008-05-07. Retrieved 2017-10-18.
  2. โ†‘ "Paleobiology Database - Involuticeras". Retrieved 2017-10-19.

Treatise on Invertebrate Paleontology, Part L,(1957), Mesozoic Ammonoidea, p. L324.


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