Cephalopoda - Nautilida - Tainoceratidae
Parent taxon: Tainoceratidae according to Y. S. Sobolev 1985
Sister taxa: Anoploceras, Anthodiscoceras, Araxonautilus, Arctonautilus, Aulametacoceras, Clavinautilus, Cooperoceras, Encoiloceras, Enoploceras, Eulomacoceras, Germanonautilus, Gzheloceras, Hefengnautilus, Hexagonites, Holconautilus, Huanghoceras, Lichuanoceras, Lirometacoceras, Meixianlingites, Metacoceras, Mojsvaroceras, Neoclavinautilus, Neotainoceras, Nodonautilus, Nodopleuroceras, Parametacoceras, Paratainoceras, Paratainonautilus, Phloioceras, Pleuronautilus, Pseudometacoceras, Pseudotemnocheilus, Seironautilus, Siamnautilus, Sibyllonautilus, Sinotitanoceras, Tainionautilus, Tainoceras, Tanchiashanites, Thuringionautilus, Tirolonautilus, Trachynautilus, Tylonautilus, Pseudofoordiceras, Heurekoceras, Hunanoceras
Subtaxa: Phaedrysmocheilus idahoensis, Phaedrysmocheilus nestori, Phaedrysmocheilus olenekensis, Phaedrysmocheilus subaratus, Phaedrysmocheilus velivolus
Type: Nautilus subaratus
Ecology: nektobenthic carnivore