Parent taxon: Ammonoidea according to J. P. Smith 1927
See also Astakhova 1971, Tatzreiter 1981, Tozer 1979, Tozer 1981 and Tozer 1994
Sister taxa: Aequiloboidea, Agoniatitida, Ammonitida, Aptychus, Ceratitida, Clymeniida, Cornaptychus, Ellipsolithes, Epimayites, Eubranoceras, Farbesiceras, Forbescieras, Globites, Gomimonomeroceras, Goniatitida, Laevaptychus, Laevicornaptychus, Lenticeratidae, Lilinthiceras, Lytoceratida, Lytocerida, Medlicottiida, Orbulites, Pelagus, Phylloceratida, Phylloceratitida, Phyllocerida, Planulites, Praeglyphioceratida, Prolecanitida, Pronoritida, Proplanulitidae, Psiloceratida, Ptychoceratoidea, Punctaptychus, Rugaptychus, Sidetes, Spinaptychus, Tornoceratida, Tornocerida, Trachyceratina, Yokoyamaceras
Subtaxa: none
Ecology: fast-moving nektonic carnivore
Distribution: there are no occurrences of Tropitoidea in the database