Stearoceras is an extinct genus of prehistoric nautiloids from the Lower Pennsylvanian (Upper Carboniferous) - Lower Permian with a fair worldwide distribution.

(Kümmel 1964) Stearoceras is recognized by its involute shell with a depressed subtrapizoidal whorl section and slight ventral and lateral lobes.

In contrast Stenoporceras is subdiscoidal and has a suture with broad lateral lobes and a deep ventral saddle as found in syringonautilids.

(ibid) Nautiloids are a subclass of shelled cephalopods that were once diverse and numerous but are now represented by only a handful of species.

This prehistoric nautiloid-related article is a stub.