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Involuticeras
Genus of molluscs (fossil) From Wikipedia, the free encyclopedia
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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.
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