Parent taxon: Oncoceratida according to C. Teichert et al. 1964
Sister taxa: Acleistoceratidae, Agrioceras, Aktjubocheilus, Alloceras, Almaloceras, Anonymoceras, Anthomorpha, Antonoceras, Aphyctoceras, Apioceras, Archiacoceratidae, Atomoceras, Balashovia, Brevicoceratidae, Calchasiceras, Corbuloceras, Corysoceras, Cyrtoceras, Dalecarlioceras, Diestoceratidae, Doleroceras, Edenoceras, Eocyrtoceras, Eudoceras, Gomphoceras, Graciloceratidae, Guangyuanoceras, Guangyuanoceroides, Gyroceras, Hemibeloitoceras, Hemiphragmoceratidae, Hiregiroceras, Iowoceras, Irinites, Jovellaniidae, Kallholnoceras, Karoceratidae, Kijoceras, Kophinoceras, Leonardoceras, Lychnoceras, Megaloceras, Meloceras, Mimolychnoceras, Mnemoceras, Nelimenia, Neoceras, Nothoceratidae, Oligoceras, Oncoceratidae, Oonoceratidae, Oratoceras, Pachtoceras, Phthanoncoceratidae, Polyelasmoceratidae, Pseudobrevicoceras, Pyramidoceras, Ramussenoceras, Rhomboceras, Spanioceras, Sycoceras, Talattoceras, Torquatoceras, Trigonodema, Trimeroceratidae, Tripleuroceratidae, Tshingizoceras, Valcouroceratidae, Wetherbyoceras, Xainzanoceras
Subtaxa: Argocheilus, Cyrtogomphus, Lysagoroceras, Mecynoceras, Poterioceras, Welleroceras, Xenoceras
Ecology: fast-moving nektobenthic carnivore