Class Cephalopoda Rank Genus | Phylum Mollusca | |
Similar Bostrychoceras, Craspedites, Ceratitida, Goniatite | ||
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
Involuticeras Wikipedia(Text) CC BY-SA