Cephalopoda - Orthocerida - Proteoceratidae
Synonym: Hammelloceras Shimizu and Obata 1935
Parent taxon: Proteoceratidae according to B. Kröger 2013
See also Crick 1981, Evans 1994, Flower 1962, Sweet 1958, Sweet 1964 and Teichert et al. 1964
Sister taxa: Archigeisonoceras, Baykonuroceras, Clothoceras, Cyrtactinoceras, Ephippiorthoceras, Euorthoceras, Gangshanoceras, Isorthoceras, Liulinoceras, Mesnaquaceras, Metephippiorthoceras, Monomuchites, Paraproteoceras, Proteoceras, Pseudeskimoceras, Pseudoliolinoceras, Stereospyroceras, Tofangoceras, Transorthoceras, Treptoceras, Ulmioceras
Subtaxa: Gorbyoceras alternestriatum Gorbyoceras clathroannulatum Gorbyoceras gorbyi Gorbyoceras gracile Gorbyoceras hammelli Gorbyoceras tetreauense Gorbyoceras textumaraneum
Type: Orthoceras gorbyi
Ecology: nektonic carnivore
Distribution:
• Silurian of the United Kingdom (1 collection)
• Ordovician of Australia (8), Canada (12: Newfoundland and Labrador, Northwest Territories, Nunavut, Ontario), China (3), Estonia (1), Ireland (1), Norway (3), Sweden (3), the United Kingdom (8), United States (20: Illinois, Iowa, Wisconsin, Indiana, Kentucky, Minnesota, Ohio)
Total: 60 collections including 64 occurrences
Specimen images are retrieved through the ePANDDA API.
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