Classification of the family Kosmoceratidae
Fm. †Kosmoceratidae Haug 1887
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G. †Catasigaloceras
G. †Epicosmoceras
G. †Gowericeras Buckman 1921
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†Gowericeras snugharborense Imlay 1953
†Gowericeras spinosum Imlay 1953
†Kepplerites (Gowericeras) lindgreni Hyatt 1894
G. †Gulielmina
G. †Gulielmites
G. †Hoplikosmokeras Buckman 1924
G. †Kepplerites Neumayr and Uhlig 1892
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Subg. †Kepplerites (Kepplerites) Neumayr and Uhlig 1892
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†Kepplerites (Kepplerites) keppleri Oppel 1862
†Kepplerites (Kepplerites) toricellii Oppel 1862
†Kepplerites enodatum Nikitin 1881
†Kepplerites lorinclarki Imlay 1961
Subfm. †Kosmoceratinae Haug 1887
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G. †Kosmoceras Waagen 1869
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†Cosmoceras duncani Sowerby 1816
†Cosmoceras paracontrarium Burckhardt 1927
†Cosmoceras spoliatum Quenstedt 1858
†Kosmoceras gemmatum Phillips 1835
†Kosmoceras rotundum Quenstedt 1846
†Kosmoceras rowlstonense Young and Bird 1822
†Kosmoceras spinosum Sowerby 1826
G. †Lobokosmoceras
G. †Seymourites
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†Kepplerites (Seymourites) abruptus McLearn 1929
†Kepplerites (Seymourites) alticostatus Imlay 1953
†Kepplerites (Seymourites) gitinsi McLearn 1927
†Kepplerites (Seymourites) ingrahami McLearn 1929
†Kepplerites (Seymourites) mcevoyi McLearn 1928
†Kepplerites (Seymourites) multus McLearn 1929
†Kepplerites (Seymourites) plenus McLearn 1927
†Kepplerites (Seymourites) tychonis Ravn 1911
G. †Sigaloceras Hyatt 1900
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G. †Toricellites