Parent taxon: Ammonoidea according to J. Lehmann et al. 2016
See also Arkell et al. 1957, Edmunds et al. 2016, Henderson 1990, Howarth 2013, Kennedy et al. 1997, Kennedy et al. 1997, Kennedy et al. 1998, Kennedy et al. 1981, Kennedy et al. 1992, Kennedy and Klinger 1990, Klinger and Kennedy 1984, Klinger and Kennedy 1989, Landman et al. 2007, Medina and Riccardi 2005, Pavia 2007, Shevyrev 2006, Summesberger 1980, Tozer 1994 and Wild and Stilwell 2016
Sister taxa: Agoniatitida, Aleteceratidae, Anclyoceras, Ankobites, Aptychus, Bandoites, Berrosiceras, Betyokites, Billcobbanoceras, Blanforidceras, Bochianitoidea, Catalecanites, Ceratitida, Chetaites, Clymeniida, Constileioceras, Cordubiceras, Cornaptychus, Cowtoniceras, Crussoliceras, Damesiceras, Desmosphinctes, Diodochoceras, Discosphinctoides, Egrabensiceras, Ellipsolithes, Eocephalites, Eohecticoceras, Eoheteroceras, Eosphinctoceras, Epigonites, Epimayites, Espaniceras, Eubranoceras, Farbesiceras, Flabellisphinctes, Forbescieras, Garnierisphinctes, Globites, Glyptoceras, Gomimonomeroceras, Goniatites crebriseptum, Goniatitida, Haploscaphites, Himispiticeras, Holcostephanus, Jeanneticeras, Jeanthieuolyites, Karaschiceras, Kashpurites, Katrolites, Kurnubiella, Laevaptychus, Laevicornaptychus, Langdaiceras, Lenticeratidae, Lupherites, Lytoceratida, Lytocerida, Manoloviceras, Mathoceratites, Medlicottiida, Megasphaeroceras, Metapatoceras, Neobibolites, Neoglytoxoceras, Neuqueniceras, Nodiocoeloceras, Notoceras, Odoghertyceras, Orbulites, Organoceras, Osperlioceras, Padagrosites, Padragosiceras, Palnerostephanus, Paltaopites, Paradicidia, Paranclyoceras, Pelagus, Petrolytoceras, Phlyseogrammocera, Phylloceratida, Phylloceratitida, Phyllocerida, Physeogrammoceras, Planulites, Plesiacanthoides, Plictetia, Praeglyphioceratida, Prolecanitida, Pronoritida, Propectinatites, Proplanulitidae, Protanclyoceras, Protancyloceratoidea, Pseudinvoluticeras, Pseudoaganides, Pseudoclydoniceras, Pseudokatroliceras, Psiloceratida, Ptychoceratoidea, Punctaptychus, Rhampidoceras, Rugaptychus, Sarmatisphinctes, Sidetes, Simosphinctes, Sohlites, Spinaptychus, Subacerites, Sulcohoplites, Telodactylus, Thraxites, Tobolia, Tolvericeras, Tongoboroceras, Tornoceras edwinhalli, Tornoceratida, Tornocerida, Toulisphinctes, Tovebirkelundites, Trachyceratina, Triagolytoceras, Trolliceras, Tropitoidea, Tyrannites, Veveysiceras, Wellsia, Yokoyamaceras
Subtaxa: Ammonites Ammonitina Ancyloceratina Ancylocerina Benetticeras Cardiocerina Dudresnayiceras Haplocerina Paraceltites bowdeni Psilocerina Sinuiceratidae Stephanocerina Steueroceras
Ecology: fast-moving nektonic carnivore