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Aristoceras appressum
Ruzhentsev, 1950 † (FOSSIL)
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Prothalassoceras bashkiricum
Ruzhentsev, 1950 † (FOSSIL)
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Prothalassoceras biforme
Gerassimov, 1937 † (FOSSIL)
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Prothalassoceras bostocki
Nassichuk, 1971 † (FOSSIL)
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Prothalassoceras caddoense
Plummer & P.H. Scott, 1937 † (FOSSIL)
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Mapesites chautauquaensis
Work & Boardman, 2003 † (FOSSIL)
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Aristoceras chkalovi
(Ruzhentsev, 1940 †) (FOSSIL)
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Gordonites filifer
W.J. Gordon, 1964 † (FOSSIL)
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Thalassoceras gemmellaroi
Karpinsky, 1889 † (FOSSIL)
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Prothalassoceras inexpectans
Miller & Owen, 1937 † (FOSSIL)
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Prothalassoceras inflatum
Ruzhentsev, 1950 † (FOSSIL)
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Prothalassoceras jaikense
Ruzhentsev, 1950 † (FOSSIL)
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Prothalassoceras kingorum
Miller, 1930 † (FOSSIL)
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Gordonites matheri
W.J. Gordon, 1964 † (FOSSIL)
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Thalassoceras mediterraneum
Toumanskaya, 1949 † (FOSSIL)
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Aristoceratoides microdiscus
(C. Gemmellaro, 1887 †) (FOSSIL)
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Prehoffmannia milleri
Plummer & P.H. Scott, 1937 † (FOSSIL)
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Gleboceras mirandum
Ruzhentsev, 1950 † (FOSSIL)
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Prothalassoceras notabile
Bogoslovskaya & al., 1995 † (FOSSIL)
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Thalassoceras phillipsi
C. Gemmellaro, 1887 † (FOSSIL)
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Epithalassoceras ruzencevi
Miller & Furnish, 1940 † (FOSSIL)
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Prothalassoceras sangvorense
Leonova, 1992 † (FOSSIL)
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Prothalassoceras serratum
Maximova, 1948 † (FOSSIL)
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Aristoceras serum
Bogoslovskaya & A.M. Popov, 1986 † (FOSSIL)
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Prothalassoceras solitum
Ruzhentsev, 1978 † (FOSSIL)
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Thalassoceras subreticulatum
C. Gemmellaro, 1887 † (FOSSIL)
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Aristoceratoides varicosum
(C. Gemmellaro, 1887 †) (FOSSIL)
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Thalassoceras wadei
Miller, 1936 † (FOSSIL)
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Prothalassoceras welleri
Böse, 1919 † (FOSSIL)
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