1925  Neodimorphoceras Schmidt:512.
     1950  Neodimorphoceras.-Miller & Downs:200.

Type species: Dimorphoceras texanum Smith, 1903, p.126 [M].

Neodimorphoceras SCHMIDT, 1925:

A:   Conch form lenticular or discoidal; umbilicus almost closed. Venter rounded, rarely concave.
C:   Ribs confined to early whorls; shell surface at maturity usually rather smooth, biconvex growth lines being very faint.
G:   Prongs of ventral lobe prominently bifid; first lateral saddle subangular.

Subgenera: Neodimorphoceras (Neodimorphoceras) SCHMIDT, 1925,
Neodimorphoceras (Pinoceras) RUZHENTSEV, 1947

Neodimorphoceras (Neodimorphoceras) SCHMIDT, 1925, p.512 [* Dimorphoceras texanum SMITH, 1903, p.126; M] [= Texites SMITH, 1927, p.73, same type, OD (obj.)].

A:   Ventral side with pronounced groove appearing at a diameter of about 20 mm.