Alternative spelling: Cyrtocera
Parent taxon: Oncoceratida according to C. Teichert 1964
See also Münster 1841
Sister taxa: Acleistoceratidae, Agrioceras, Aktjuboceratidae, Alloceras, Almaloceras, Anonymoceras, Anthomorpha, Antonoceras, Aphyctoceras, Apioceras, Archiacoceratidae, Atomoceras, Balashovia, Barskoceras, Brevicoceratidae, Corbuloceras, Corysoceras, Cyrthocerataceae, Devonocheilidae, Diestoceratidae, Doleroceras, Eocyrtoceras, Eudoceras, Gomphoceras, Graciloceratidae, Guangyuanoceras, Guangyuanoceroides, Hemiphragmoceratidae, Iowoceras, Jovellaniidae, Karoceratidae, Kophinoceras, Lychnoceras, Megaloceras, Mimolychnoceras, Mnemoceras, Nelimenia, Nothoceratidae, Oligoceras, Oncoceratidae, Oonoceratidae, Oratoceras, Pachtoceras, Polyelasmoceratidae, Poterioceratidae, Pseudobrevicoceras, Pyramidoceras, Ramussenoceras, Rutoceratoidea, Spanioceras, Sycoceras, Torquatoceras, Trigonodema, Trimeroceratidae, Tripleuroceratidae, Valcouroceratidae, Wetherbyoceras, Xainzanoceras
Subtaxa: Cyrtoceras (Meloceras) Cyrtoceras indomitum Cyrtoceras minneapolis Cyrtoceras murchisoni Cyrtoceras nevadense
Ecology: fast-moving nektobenthic carnivore
Distribution:
• Carboniferous of Ireland (1 collection), the United Kingdom (2)
• Devonian of Canada (1: Manitoba), United States (2: Alaska, New York)
• Silurian of Austria (1), Brazil (1), Morocco (2), the United Kingdom (2), United States (5: Illinois, Michigan and Ohio, New York, Ohio)
• Ordovician of Canada (3: Nunavut, Ontario), United States (14: Georgia, Kentucky, Missouri, New York, Virginia)
Total: 34 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.