†Mariceras Ruzhentsev and Shimanskiy 1954 (mollusk)
Cephalopoda - Nautilida - Scyphoceratidae
Full reference: V. E. Ruzhentsev and V. N. Shimanskiy. 1954. Nizhnepermskie Svernutye i Sognutye Nautiloidei Yuzhnogo Urala [Lower Permian coiled and bent nautiloids of the southern Urals]. Trudy Paleontologicheskogo Instituta 50:1-150
Parent taxon: Scyphoceratidae according to C. Teichert et al. 1964
Sister taxa: Dentoceras, Scyphoceras, Sorinoceras, Venatoroceras
Subtaxa: Mariceras ferum, Mariceras gracile, Mariceras leonovae
Ecology: nektobenthic carnivore