Owenoceras MILLER et OWEN, 1939

Dernov, Vitaly, 2022, Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine, Fossil Imprint 78 (2), pp. 489-512 : 505

Genus Owenoceras MILLER et OWEN, 1939

T y p e s p e c i e s. Neoglyphioceras bellilineatum MILLER et OWEN, 1939; by original designation.

D i a g n o s i s. Genus of the family Bisatoceratidae with pachyconic conch and moderately wide or rather narrow umbilicus. Ornamented with prominent longitudinal lirae and weak growth lines; umbilical nodes may be present. Suture line with an almost straight-sided bifid ventral lobe and on either side of it a rounded U-shaped asymmetrical first lateral saddle, a sharply pointed somewhat tongueshaped first lateral lobe, a rather low broad asymmetrical rounded second lateral saddle, and a shallow broad pointed lobe on the umbilical wall (after Miller and Owen 1939, Miller and Furnish 1940).

S p e c i e s i n c l u d e d. O. arcutum LIANG et WANG, 1991 , Xinjiang ( China); O. bellilineatum MILLER et OWEN, 1939 , Missouri ( USA); O. orulganensis POPOW, 1960 , Orulgan Ridge (Siberia, Russia).

S t r a t i g r a p h i c r a n g e.?Late Bashkirian to Kasimovian or Gzhelian.