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Genus: Ephippioceras Hyatt, 1884 † (DB: 6 SP)
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Ephippioceras clitellarium
(Sowerby, 1840 †) (FOSSIL)
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Ephippioceras ferratum
(Cox, 1857 †) (FOSSIL)
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Ephippioceras inexpectans
Miller & Youngquist, 1947 † (FOSSIL)
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Ephippioceras moinellae
Tucker, 1976 † (FOSSIL)
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Ephippioceras sphaericum
Shimanskiy, 1967 † (FOSSIL)
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Ephippioceras verneuili
A. Hyatt, 1891 † (FOSSIL)
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Genus: Megaglossoceras Miller & al., 1933 † (DB: 3 SP)
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Megaglossoceras glicki
W.J. Gordon, 1964 † (FOSSIL)
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Megaglossoceras okense
Shimanskiy, 1967 † (FOSSIL)
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Megaglossoceras pristinum
Miller & Owen, 1934 † (FOSSIL)
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