Idoceras is a genus of perisphictacean ammonite, belonging to the Perisphinctidae subfamily Idoceratinae.

[2] 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.

Data related to Idoceras at Wikispecies