Gatunek typowy
Ammonites Listeri Sowerby, 1812

Opis

Shell thickly discoidal, pachyconic or globular with moderatelu 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.

Synonimy

Zasięg czasowy

Carboniferous; Late Bashkirian to early Moscovian

Literatura

Dernov, V. 2022. Late Bashkirian ammonoids from the Mospyne Formation of the Donets Basin, Ukraine. Fossil Imprint 78(2): 489–512.

Hyatt, A. 1884. Genera of fossil cephalopods. Boston Society of Natural History, Proceedings 22: 253-338.