1975  Neogastrioceras Nassichuk: 95.

Type species: Neogastrioceras arcticum Nassichuk,1975, p.96 [OD].

Like Syngastrioceras Librovich 1938; Neogastrioceras differs
slightly in the suture-line: their ventral prongs are wider, the
first lateral saddle is in Neogastrioceras narrower.