Gastrioceras HYATT , 1884

Dernov, Vitaly, 2022, Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine, Fossil Imprint 78 (2), pp. 489-512 : 499-501

Genus Gastrioceras HYATT, 1884

T y p e s p e c i e s. Ammonites listeri SOWERBY, 1812 ; by subsequent designation ( Foord and Crick 1897: 226; see also ICZN (1956): Opinion 420, p. 150).

D i a g n o s i s. Genus of the family Gastrioceratidae with thickly discoidal, pachyconic and globular conch with moderate and wide umbilicus; umbilical shoulder nodose. Ornamentation ranging from simple transverse lirae to reticulate pattern in some species. Suture line with a high median saddle between the attenuated prongs of the ventral lobe; lateral lobe generally nearly symmetrical and becoming attenuated on mature specimens (after Mapes et al. 1997).

S p e c i e s i n c l u d e d. G. adaense MILLER et OWEN, 1944 , Oklahoma ( USA); G. angustum PATTEISKY, 1964 , Rhenish Mountains ( Germany); G. araium MCCALEB, 1968 , Arkansas and Oklahoma ( USA); G. attenuatum MCCALEB, 1968 , Arkansas and Oklahoma ( USA); G. carbonarium ( BUCH, 1832) , Rhenish Mountains ( Germany); G. circumnodosum FOORD, 1903 , Leinster ( Ireland); G. coronatum FOORD et CRICK, 1897 , Lancashire ( England); G. crassum WEDEKIND, 1914 , Rhenish Mountains ( Germany); G. depressum DELÉPINE, 1937 , Heerlen ( the Netherlands); G. fittsi MILLER et OWEN, 1944 , Oklahoma ( USA); G. formosum MCCALEB, 1963 , Arkansas ( USA); G. glenisteri NASSICHUK, 1975, Canadian Arctic Archipelago ( Canada); G. kahrsi WEDEKIND, 1914 , Rhenish Mountains ( Germany); G. kenadsae DELÉPINE, 1941 , Béchar Province (Algerian); G. kutejnikovense POPOV, 1979 , Donets Basin ( Ukraine); G. liratum NASSICHUK, 1975 , Canadian Arctic Archipelago ( Canada); G. listeri ( SOWERBY, 1812) , Yorkshire ( England); G. lupinum POPOV, 1979 , Donets Basin ( Ukraine); G. magoffinense WORK et al., 2012 , Kentucky ( USA); G. matsumotoi NISHIDA et KYUMA, 1982 , Akiyoshi ( Japan); G. melvillensis NASSICHUK, 1975 , Canadian Arctic Archipelago ( Canada); G. occidentale MILLER et FABER, 1892 , Kentucky ( USA); G. stenolobum DELÉPINE, 1941 , Atlas ( Morocco); G. stenumbilicatum RUAN et ZHOU, 1987 , Ningxia ( China); G. weristerense DEMANET, 1943 , Liège ( Belgium); G. wongi GRABAU, 1924 , Ningxia and Gansu ( China).

S t r a t i g r a p h i c r a n g e. Late Bashkirian to early Moscovian.