Cephalopoda - Ammonitida - Stephanoceratidae
Parent taxon: Stephanoceratidae according to M. ZatoĊ 2010
See also Sandoval and Westermann 1986
Sister taxa: Arkelloceras, Cadomitinae, Clydoniceratinae, Dettermanites, Ermoceras, Frebolditinae, Garantianinae, Kosmermoceras, Kumatostephanus, Lupherites, Mollistephaninae, Parkinsoniinae, Riccardiceras, Skolekostephanus, Sohlites, Stemmatoceras, Telermoceras, Westermannites
Subtaxa: Duashnoceras Normannites Stephanoceras Teloceras
Ecology: fast-moving nektonic carnivore
Distribution:
• Jurassic of Canada (2: British Columbia collections), Chile (8), Egypt (6), France (1), Germany (1), Kenya (1), Mexico (8), Poland (2), the Russian Federation (1), Saudi Arabia (10), Spain (2), Tunisia (3), Ukraine (2), United States (10: California, Idaho, Montana, Oregon, Utah, Wyoming)
Total: 57 collections including 87 occurrences