Protocycloceras Hyatt and Zittel 1900 (mollusk)

Cephalopoda - Orthoceratoidea - Protocycloceratidae

Synonym: Rhabdocycloceras Zhuravleva 1994

Parent taxon: Protocycloceratidae according to D.H. Evans 2011

See also Hook and Flower 1977, Kröger and Landing 2009, Teichert et al. 1964 and Ulrich et al. 1944

Sister taxa: Catoraphiceras, Catoraphinoceras, Cyptendoceras, Diastoloceras, Endocycloceras, Kyminoceras, Notocycloceras

Subtaxa: Protocycloceras abnorme Protocycloceras affine Protocycloceras arkansasense Protocycloceras becki Protocycloceras catulus Protocycloceras doniphonense Protocycloceras furtivum Protocycloceras gangshanense Protocycloceras geronticum Protocycloceras lamarcki Protocycloceras levisense Protocycloceras manitouense Protocycloceras mendax Protocycloceras odenvillense Protocycloceras ordinatum Protocycloceras philipsburgense Protocycloceras rushense Protocycloceras smithvillense Protocycloceras xerxes

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Type: Orthoceras lamarcki

Ecology: fast-moving nektonic carnivore


• Virgilian of United States (1: Ohio collection)

• Desmoinesian of United States (2: Pennsylvania)

• Carboniferous of United States (4: Ohio, Pennsylvania)

• Ordovician of Argentina (1), Bolivia (1), Canada (4: Newfoundland, Newfoundland and Labrador, Quebec), China (12), the Russian Federation (1), Sweden (1), the United Kingdom (21), United States (6: Alabama, Arkansas, Colorado, Missouri, New York)

• Whiterockian of United States (2: Utah)

• Dawan of China (8)

• Cassinian of Canada (7: Newfoundland and Labrador, Ontario, Quebec), United States (8: New Mexico, New York, Vermont)

• Arenig of Argentina (1), Bolivia (1), China (15), Sweden (1)

• Jeffersonian of Canada (1: Quebec)

Total: 98 collections including 106 occurrences

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