Spyroceras Hyatt 1884 (mollusk)

Cephalopoda - Pseudorthocerida - Spyroceratidae

Parent taxon: Spyroceratidae according to B. Kröger 2008

See also Dzik and Kiselev 1995, Flower 1945, Strand 1934 and Sweet 1964

Sister taxa: Adnatoceras, Allanoceras, Anastomoceras, Atahococeras, Bitaunioceras, Cancellspyroceras, Cryptorthoceras, Cyrtospyroceras, Cyrtothoracoceras, Diagoceras, Dolorthoceras, Eridites, Euloxoceras, Fusicoceras, Geisonoceroides, Gordonoceras, Lopingoceras, Palmeroceras, Petryoceras, Pseudocycloceras, Reticycloceras, Sceptrites, Shikhanoceras, Suloceras, Tripteroceroides

Subtaxa: Spyroceras baffinense Spyroceras bilineatum Spyroceras boreale Spyroceras chambliense Spyroceras clathratoannulatum Spyroceras crotalum Spyroceras cyrtopatronus Spyroceras damesi Spyroceras ferum Spyroceras fukuijense Spyroceras giganteum Spyroceras latepatronus Spyroceras middlevillense Spyroceras olorus Spyroceras patronus Spyroceras perlaeve Spyroceras textumarenaceum

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Type: Spyroceras crotalum

Ecology: fast-moving nektonic carnivore

Distribution:

• Devonian of Canada (1: Ontario collection), the Czech Republic (7), Morocco (3), the Russian Federation (2), United States (62: Colorado, Indiana, New York, Pennsylvania)

• Silurian of Canada (3: Northwest Territories), Germany (2), Poland (3), United States (4: Alaska, New York)

• Ordovician of Canada (24: Manitoba, Northwest Territories, Nunavut, Ontario, Quebec, Saskatchewan), Estonia (5), Greenland (1), Norway (6), United States (25: Colorado, Illinois, Iowa, Wisconsin, Indiana, Ohio, Iowa, Michigan, Minnesota, Missouri, New York, Ohio, South Dakota, Tennessee, Virginia, Wyoming)

• Chazy of Canada (1: Quebec)

• Whiterockian of United States (1: California)

Total: 150 collections including 168 occurrences

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Specimen images are retrieved through the ePANDDA API.


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