Cephalopoda - Ammonitida - Sphaeroceratidae
Parent taxon: Stephanocerataceae according to T. P. Poulton and R. L. Hall 2019
See also Alberti et al. 2015, Arkell et al. 1957, Arthur et al. 1993, Majidifard 2015 and Parent 2006
Sister taxa: Cardioceratidae, Macrocephalitidae, Oecoptychiidae, Otoitidae, Stephanoceratidae, Tulitidae
Subtaxa: Chondroceras Eocephalites Eurycephalitinae Labyrinthoceras Mayaitinae Oecoptychoceras Sphaeroceras
Type: Sphaeroceras
Ecology: fast-moving nektonic carnivore
Distribution:
• Temaikan of New Zealand (2 collections)
• Jurassic of Antarctica (1), Argentina (54), Canada (20: British Columbia), Chile (6), China (1), Eritrea (2), Germany (1), Honduras (1), India (37), Iran (2), Iraq (1), Madagascar (17), Mexico (1), Nepal (1), the Russian Federation (1), Tunisia (1), Turkmenistan (2), United States (70: Alaska, Montana, Utah, Wyoming, Wyoming ), Yemen (3)
Total: 224 collections including 412 occurrences