Parent taxon: Orthocerida according to J. J. Sepkoski 2002
Sister taxa: Acrosphaerorthoceras, Aethiosolen, Arionoceratidae, Arterioceras, Badouceras, Baltoceratidae, Bogoslovskya, Bohemites, Cedarvilleoceras, Chicagooceras, Coralloceras, Cornuella, Cryptocycloceras, Cycloceras, Dictyoceras, Donacoceras, Esopoceras, Folioceras, Garryoceras, Geisonoceratidae, Geisonocerina, Greenlandoceras, Haruspex, Heloceras, Jangziceras, Joldagiroceras, Kionoceratidae, Leurocycloceras, Lituitina, Loxoceras, Mericoceras, Molossus, Murchisoniceras, Naivs, Narthecoceratidae, Nebroceras, Neorthoceras, Neosichuanoceras, Ophidioceras, Orthoceratidae, Orthoceratina, Paradnatoceras, Paramooreoceras, Plicatoceras, Podoliceras, Proteoceratidae, Protobactrites, Pseudokionoceras, Pseudorthocerataceae, Pseudotemperoceras, Pythonoceras, Rhabdites, Rhipsites, Richmondoceras, Sannionites, Siberioceras, Sichuanaceras, Sichuanoceratidae, Sphaerorthoceratidae, Sphaerortoceratidae, Standardoceras, Subspyroceras, Tambegiroceras, Tartaroceras, Tienoceras, Tretoceras, Tripteroceratidae, Trispectes, Tunguskoceras, Vericeras, Zhuralevia, Greenlandoceratidae, Allumettoceratidae, Michelinoceratidae, Striatoceratidae, Choanoceratidae, Cycloceratidae, Eskimoceratidae, Clinoceratidae, Engorthoceratidae
Subtaxa: Palaeocycloceras eichwaldi
Ecology: nektonic carnivore
Distribution:
• Ordovician of Sweden (2 collections)
• Dawan of China (2)
Total: 4 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.