†family Stereoplasmoceratidae Kobayashi 1934 (mollusk)
Cephalopoda - Orthocerida - Stereoplasmoceratidae
Parent taxon: Pseudorthocerataceae according to C. Teichert et al. 1964
See also Crick 1981 and Sweet 1958
Sister taxa: Cyrtactinoceratidae, Mysterioceratidae, Songkanocerasidae
Subtaxa: Stereoplasmoceras Stereoplasmocerina
Ecology: nektonic carnivore
Distribution: