Gatunek typowy
Nomismoceras (Anthracoceras) discus Frech, 1899

Opis

Probably a successor of Sudeticeras. Subdiscoidal shell with narrow, almost closed umbilicus; growth lines with ventral sinus and strong salients forming a lingua on ventro-lateral shoulder; second salient weak on the flanks; faint longitudinal ornamentation on some species; ventral lobe wide, with strongly divergent sides; first lateral saddle broadly rounded; adventitious lobe rounded during ontogeny, pointed at maturity.

Synonimy

Zasięg czasowy

Carboniferous; Visean – Moscovian

Literatura

Frech, F.  1899. Lethaea geognostica, Teil 1: Lethaea palaeozica, Band 2, Lieferung 2: Die Steinkohlenformation.  257-452. Schweizerbart, Stuttgart.