Parent taxon: Ammonoidea according to D. Korn and M. N. Sudar 2016
See also Furnish et al. 2009, Kummel 1969, Leonova 2002, Sepkoski 2002, Titus 2000 and Tozer 1994
Sister taxa: Aequiloboidea, Agoniatitida, Ammonites hercules, Ammonites ludovicus, Ammonitida, Aptychus, Aulicostephanidae, Ceratitida, Clymeniida, Cornaptychus, Egrabensiceras, Ellipsolithes, Epimayites, Eubranoceras, Farbesiceras, Forbescieras, Globites, Gomimonomeroceras, Goniatitida, Laevaptychus, Laevicornaptychus, Lenticeratidae, Lilinthiceras, Lytoceratida, Lytocerida, Medlicottiida, Orbulites, Pelagus, Phylloceratida, Phylloceratitida, Phyllocerida, Planulites, Praeglyphioceratida, Pronoritida, Proplanulitidae, Psiloceratida, Ptychoceratoidea, Punctaptychus, Rugaptychus, Sidetes, Spinaptychus, Tornoceratida, Tornocerida, Trachyceratina, Tropitoidea, Yokoyamaceras
Subtaxa: Medlicottiina Medlicottioidea Prolecanitina Prolecanitoidea Sageceratina
Ecology: fast-moving nektonic carnivore