Cephalopoda - Ammonitida - Acrioceratidae
Parent taxon: Ancyloceratoidea according to J. Klein et al. 2007
See also Frau and Bulot 2023 and Lehmann et al. 2020
Sister taxa: Ancyloceratidae, Hemihoplitidae, Heteroceratidae, Himantoceratidae, Labeceratidae, Leptoceratoididae, Paraspiticeras, Ptychoceratidae
Subtaxa: Brainaella Dissimilites Hamiticeras Helicancylinae Helicancylus Helicancylus aequicostatus Hoplocrioceras
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Antarctica (2 collections), Argentina (13), Australia (2), Canada (4: Northwest Territories, Yukon), Chile (2), Colombia (3), the Czech Republic (3), France (20), Italy (1), Japan (4), Mexico (5), Morocco (9), Mozambique (2), Serbia and Montenegro (1), Spain (18), the United Kingdom (6), United States (9: California, Oregon)
Total: 104 collections including 119 occurrences