1985  Eotumaroceras Andrianov: 143.

Type species: Eotumaroceras endybalense Andrianov, 1985, p.144 [OD].

[Andrianov 1985, p. 143: Conch large, subophiocone: Width/diameter =
0.41-0.42. Whorls evolute, semi-elliptical in cross-section.  
Umbilicus moderately wide, stairstep-like.  Sculpture seemingly reticulated.  
Radially elongated folds present on shell of early whorls. Constrictions
form ventral salient.  Ventral lobe wide, with weakly rounded outer sides;
the dividing median saddle slightly wider than each prong of this lobe in
late growth stages of conch. Umbilical lobe in a primary state of threefold
division.]

[Eotumaroceras resembles Paragastrioceras regarded herein as senior synonym].