Full reference: E. O. Ulrich, A. F. Foerste, A. K. Miller and W. M. Furnish. 1944. Ozarkian and Canadian cephalopods, longicones and summary. Geological Society of America Special Paper 58:1-226
Parent taxon: Ellesmerocerida according to B. Kröger and E. Landing 2009
Sister taxa: Acaroceras, Anhuiceras, Antacaroceras, Bambusoceras, Bassleroceratidae, Belloceras, Centrocyrtocerina, Chabactoceras, Cyclostomiceratidae, Cyptendocerina, Cyrtocerinidae, Cyrtocerinina, Dongshanoceras, Eburoceras, Ellesmeroceratidae, Ellesmeroceratina, Eoclarkoceras, Eocyckistomiceras, Eodiaphragmoceras, Eoectenolites, Eothinoceratidae, Huaiheceras, Huiaihecerina, Hunyuenoceras, Irianoceras, Jiagouceras, Keraiaceras, Lunanoceras, Meikeloceras, Paradakeoceras, Parapalaeoceras, Paraplectronoceras, Plectronoceratina, Protocycloceratidae, Pseudendoceras, Purmanarcoceras, Qiushougouceras, Rectseptoceras, Rhabdiferous, Rioceratidae, Shideleroceratidae, Sinolebetoceras, Tanycameroceras, Theskeloceras, Vassaroceras, Weishanhuceras, Xiaoshaoceras, Zhuibianoceras
Subtaxa: Rudolfoceras
Type: Rudolfoceras
Ecology: nektobenthic carnivore