Cephalopoda - Oncocerida - Oonoceratidae
Parent taxon: Oncoceratida according to J. Dzik and G. N. Kiselev 1995
Sister taxa: Acleistoceratidae, Agrioceras, Aktjuboceratidae, Alloceras, Almaloceras, Anonymoceras, Anthomorpha, Antonoceras, Aphyctoceras, Apioceras, Archiacoceratidae, Atomoceras, Balashovia, Brevicoceratidae, Corbuloceras, Corysoceras, Cyrthocerataceae, Cyrtoceras, Devonocheilidae, Diestoceratidae, Doleroceras, Eocyrtoceras, Eudoceras, Gomphoceras, Graciloceratidae, Guangyuanoceras, Guangyuanoceroides, Hemiphragmoceratidae, Iowoceras, Jovellaniidae, Karoceratidae, Kophinoceras, Lychnoceras, Megaloceras, Mimolychnoceras, Mnemoceras, Nelimenia, Nothoceratidae, Oligoceras, Oncoceratidae, Oratoceras, Pachtoceras, Polyelasmoceratidae, Poterioceratidae, Pseudobrevicoceras, Pyramidoceras, Ramussenoceras, Rutoceratoidea, Spanioceras, Sycoceras, Torquatoceras, Trigonodema, Trimeroceratidae, Tripleuroceratidae, Valcouroceratidae, Wetherbyoceras, Xainzanoceras
Subtaxa: Euryrizocerina Oonoceras
Ecology: fast-moving nektobenthic carnivore
Distribution:
• Devonian of United States (1: Alaska collection)
• Silurian of Czechia (2), Italy (3)
• Chazyan of United States (5: New York, Vermont)
• Ordovician of Canada (3: Northwest Territories, Quebec), Estonia (1), Poland (2), United States (3: Indiana, Ohio)
Total: 20 collections including 25 occurrences