Classification of the genus Spyroceras

G. †Spyroceras Hyatt 1884
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Spyroceras baffinense Schuchert 1900
Spyroceras bilineatum Hall 1847
Spyroceras boreale Foerste and Savage 1927
Spyroceras chambliense Foerste 1924
Spyroceras crotalum Hall 1879
Spyroceras cylindratum Foerste 1932
Spyroceras cyrtopatronus Kröger 2008
Spyroceras damesi Krause 1877
Spyroceras ferum Billings 1866
Spyroceras fukuijense Niko 1996
Spyroceras giganteum Flower 1945
Spyroceras latepatronus Kröger 2008
Spyroceras middlevillense Foerste 1928
Spyroceras olorus Hall 1879
Spyroceras patronus Barrande 1866
Spyroceras perlaeve Strand 1934
Spyroceras persculptum Ruedemann 1926