Cephalopoda - Orthocerida - Orthoceratidae
Parent taxon: Orthoceratidae according to D. H. Evans 2005
See also Chen et al. 1981, Holland 2000 and Teichert et al. 1964
Sister taxa: Aethiosolen, Anaspyroceratinae, Chebbioceras, Ctenoceras, Infundibuloceras, Kopaninoceras, Leurocycloceratinae, Merocycloceras, Michelinoceras, Orthoceras, Orthoceratinae, Orthocycloceras, Palorthoceras, Pleurorthoceras, Pojetoceras, Prohypogeophis, Prohypogeophis tunariensis, Pseudospyroceras, Striatocycloceras, Theoceras, Tibichoanoceras, Tienoceras
Subtaxa: Arkonoceras Balticoceras Hesperoceras Imbricatoceras Pedanochonoceras Sinoceras
Ecology: nektonic carnivore
Distribution:
• Devonian of Italy (2 collections), Morocco (1)
• Silurian of China (1), Italy (2), the United Kingdom (3)
• Ordovician of China (44), Ireland (1), the United Kingdom (4)
Total: 58 collections each including a single occurrence