Stephanoceras
Distribution:
• Jurassic of Argentina (1 collection), Australia (3), Canada (2: British Columbia), Chile (6), Egypt (1), India (1), Indonesia (1), Italy (1), Mexico (3), Saudi Arabia (5), Spain (2), Tunisia (3), Ukraine (2), United States (4: Idaho, Oregon, Utah)
• Permian of Italy (1)
Total: 36 collections including 46 occurrences