Gastriocerataceae Gastrioceratoidea is one of 17 superfamilies in the suborder Goniatitina, ammonoid cephalopods from the Late Paleozoic.

Shells are variable in form with a broad whorl section and wide umbilicus.

Shells may be smooth or sculptured with transverse striae (fine grooves) and constrictions.

The median saddle is half as high or more so than the height of the entire ventral lobe.

The first lateral saddle, which lies next to the ventral lobe is either rounded or subacute.