Parent taxon: Ammonitina according to L. G. Bulot 2010
Sister taxa: Acanthoceratoidea, Aspidoceratoidea, Deshayesitoidea, Desmoceratoidea, Eoderoceratoidea, Hammatoceratoidea, Hildoceratoidea, Hoplitoidea, Lytoceratoidea, Oppeliaceae, Perisphinctaceae, Perisphinctoidea, Psiloceratoidea, Pulchelliaceae, Sphaeroceratoidea, Spiroceratoidea, Stephanoceratoidea, Hamitaceae, Protetragonitidae, Tetragonitoidea, Crioceratitaceae, Nannolytoceratidae
Subtaxa: Knemiceratidae
Ecology: fast-moving nektonic carnivore
Distribution:
• Cretaceous of Ecuador (1 collection), Egypt (17), France (1), Madagascar (1), Mozambique (1), North Atlantic (1), Oman (1), Peru (24), Portugal (1), South Africa (1), Spain (1), Tunisia (22), the United Kingdom (1), United States (4: New Mexico, Texas), Venezuela (7)
Total: 84 collections including 134 occurrences