1965  Gastrioceras (Lissogastrioceras) Gordon: 257.
     1982  Gastrioceras (Lissogastrioceras).- Nishida & Kyuma: 21.

Type species: Gastrioceras fittsi Miller & Owen, 1944, p.424 [OD].

Umbilical shoulder ornamented with nodes or short ribs bearing fine longitudinal lirae. Constrictions in immature shells form
broad orad bows, later with deep ventral sinus. Ventral region of shell surface smooth. [Regarded herein as of mere specific significance].