Alternative spelling: Tarphyceratida
Full reference: R. H. Flower and B. Kummel, Jr. 1950. A Classification of the Nautiloidea. Journal of Paleontology 24(5):604-616
Parent taxon: Cephalopoda according to B. Kröger et al. 2011
Sister taxa: Actinoceratoidea, Actinocerida, Actinodochmioceras, Akidocheilus, Ammonoidea, Aulacocerida, Ausseites, Avramidiscus, Bactritoidea, Belemnitida, Belopeltis, Belosaepia, Boletzkida, Botellusoceras, Burronoceras, Coleoidea, Conchorhynchus, Dartoceras, Davidiceras, Deltoceratidae, Desmoceras, Discosorida, Dissimilites, Endoceratoidea, Endocycloceratidae, Erlangericheilus, Gonatocheilus, Hadrocheilus, Heyuncunoceras, Kailiceras, Kotetishvilia, Lamellaptychus, Leptocheilus, Lituitida, Mesoteuthoidea, Nautilida, Nautiloidea, Neptunoceratidae, Oncocerida, Orthoceratina, Orthoceratoidea, Orthodochmioceras, Palaeoteuthis, Patruliusiceras, Plectonocerida, Protactinocerida, Pseudorthocerida, Rhyncholite, Rhynchoteuthis, Robsonoceratidae, Sabbaiceras, Scaptorrhynchus, Sichunoceras, Songkanoceras, Spirulirostridae, Stemtonoceratidae, Tetrabranchiata, Tillicheilus, Toxancyloceras, Werthenoceras, Yanhecerida, Yannanoceras, Yichangoceras, Paratrematoceras, Balticoceras, Arkonoceras, Eotripteroceras, Hesperoceras, Sinoceras
Subtaxa: Bateroboceras, Bentoceras, Bodieceras, Craftonoceras, Discoceratidae, Estonioceratidae, Inclytoceras, Kinaschukoceras, Kosovoceras, Magdoceras, Ophidoceratidae, Pakrioceras, Paradiscoceras, Plectolites, Pseudancistroceras, Tarphyceratidae, Trocholitidae, Vasalemmoceras, Weberoceras
Ecology: fast-moving nektobenthic carnivore