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Alaskoceras alaskensis
Miller & Kummel 1945 † (FOSSIL)
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Aphetoceras americanum
A. Hyatt, 1894 † (FOSSIL)
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Pycnoceras apertum
A. Hyatt, 1894 † (FOSSIL)
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Aphetoceras attenuatum
A. Hyatt, 1894 † (FOSSIL)
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Aphetoceras boreale
A. Hyatt, 1894 † (FOSSIL)
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Pycnoceras calciferiforme
A. Hyatt, 1894 † (FOSSIL)
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Clytoceras capax
Ulrich & al., 1942 † (FOSSIL)
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Aethoceras caurus
Teichert & Glenister † (FOSSIL)
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Pycnoceras clausum
Ulrich & al., 1942 † (FOSSIL)
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Shumardoceras complanatum
(Shumard, 1863 †) (FOSSIL)
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Tragoceras decheni
(Remele, 1886 †) (FOSSIL)
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Aphetoceras delectans
Teichert & Glenister † (FOSSIL)
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Aphetoceras evolutum
Ulrich & al., 1942 † (FOSSIL)
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Tragoceras falcatum
(Schlotheim, 1820 †) (FOSSIL)
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Aphetoceras farnsworthi
(Billings, 1861 †) (FOSSIL)
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Shumardoceras fragile
Ulrich & al., 1942 † (FOSSIL)
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Estonioceras imperfectum
(F.A. von Quenstedt, 1845 †) (FOSSIL)
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Estonioceras lamellosum
(W.v. Hisinger †) (FOSSIL)
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Aphetoceras oderi
Ulrich & al., 1942 † (FOSSIL)
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Estonioceras proteus
Holm † (FOSSIL)
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Pycnoceras rotundatum
Ulrich & al., 1942 † (FOSSIL)
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Aphetoceras ruedemanni
Ulrich & al., 1942 † (FOSSIL)
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Alaskoceras sewardense
(Flower †) (FOSSIL)
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Tragoceras subcostatum
(Angelin †) (FOSSIL)
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Aphetoceras subcostulatum
Ulrich & al., 1942 † (FOSSIL)
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Shumardoceras taneyense
Ulrich & al., 1942 † (FOSSIL)
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