Superfamily Perisphinctaceae Rank Genus | ||
Similar Ataxioceras, Aspidoceras, Orthosphinctes, Haploceras, Ochetoceras | ||
Idoceras is a genus of perisphictacean ammonite, belonging to the Perisphinctidae subfamily Idoceratinae. The genus is known from the Upper Jurassic, with a widespread distribution. Shells of Idoceras are evolute, with a wide umbilicus; ribbing strong, bifurcate high on flanks. Suture simpler than in the similar Ataxioceras.
References
Idoceras Wikipedia(Text) CC BY-SA