Gaspocyrtoceras  Gaspocyrtoceras is a genus of orthocerids included in the Paraphragmitidae. Its fossils are limited to North America and have been found in Wisconsin and Quebec. The shell of "Gaspocyrtoceras" is a coarsely annularted exogastric cyrtocone. Curvature is upward, the ventral side convex in profile. Annulations slope dorso-ventally to the rear as they do in "Calocyrtoceras". Striations on the surface, fine goove-like features, are longitudinal in contrast to the transverse striations of "Cyrtocycloceras".