Full reference: S. Niko and T. Ozawa. 1997. Late Gzhelian (Carboniferous) to early Asselian (Permian) non-ammonoid cephalopods from the Taishaku Limestone Group, Southwest Japan. Paleontological Research 1(1):47-54
Parent taxon: Nautilida according to S. Niko and T. Ozawa 1997
Sister taxa: Adeloceras, Aipocerataceae, Aktubonautilidae, Alethynoceras, Anepheloceras, Anglonautlis, Aphractus, Askeatonolucidum, Bastindoceras, Capriocornites, Catastroboceras, Celox, Centroceratidae, Clydonautilaceae, Cranoceras, Danzikoceras, Dasbergoceras, Dentoceratidae, Dinocycloceras, Domatoceratidae, Dzhinsetoceras, Euciphoceras, Geitonoceras, Grzegorzewskia, Hercoglossoceras, Koninckioceras, Krykyloceras, Kummeloceras, Mahoningoceras, Mosquoceratidae, Nautilitaceae, Nautiloceras, Neobistrialites, Nikenautilus, Ophionautilus, Palaskensis, Palelialia, Perigrammoceras, Piratoceras, Pleuronautilidae, Pseudaturoidea, Pseudocatastroboceras, Pseudophacoceras, Pseudostenopoceras, Pseudotitanoceras, Simplicioceras, Soakinautilus, Stenzeloceras, Tainocerataceae, Thaymastoceras, Thrincoceratidae, Trematodiscus, Triboloceras, Trigonocerataceae, Tumidonautilus, Uloceras, Valhallites, Vertorhizoceras, Yakutionautilus
Subtaxa: none
Ecology: nektobenthic carnivore