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Genus: Bridgeites Flower, 1968 † (DB: 6 SP)
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Bridgeites atlanticus
(Billings, 1865 †) (FOSSIL)
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Bridgeites discoideus
Flower, 1968 † (FOSSIL)
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Bridgeites disjuncta
(Billings, 1865 †) (FOSSIL)
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Bridgeites planidorsalis
(Cullison, 1944 †) (FOSSIL)
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Bridgeites supraconvexa
(Cullison, 1944 †) (FOSSIL)
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Bridgeites volutatus
(R.P. Whitfield, 1886 †) (FOSSIL)
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Genus: Calaurops Whitfield, 1886 † (DB: 2 SP)
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Calaurops canadensis
(Billings, 1861 †) (FOSSIL)
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Calaurops lituiformis
R.P. Whitfield, 1886 † (FOSSIL)
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Genus: Ceratopea Ulrich, 1911 † (DB: 26 SP)
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Ceratopea arabella
(Billings, 1865 †) (FOSSIL)
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Ceratopea buttsi
E.L. Yochelson & Bridge, 1957 † (FOSSIL)
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Ceratopea canadensis
(Billings, 1865 †) (FOSSIL)
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Ceratopea compressum
(R.P. Whitfield, 1886 †) (FOSSIL)
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Ceratopea depressa
(Butts, 1926 †) (FOSSIL)
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Ceratopea grandis
(Butts, 1926 †) (FOSSIL)
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Ceratopea hami
E.L. Yochelson & Bridge, 1957 † (FOSSIL)
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Ceratopea harpya
(Billings, 1865 †) (FOSSIL)
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Ceratopea inflata
Cullison, 1944 † (FOSSIL)
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Ceratopea kawasakii
(T. Kobayashi, 1930 †) (FOSSIL)
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Ceratopea keithi
Ulrich, 1911 † (FOSSIL)
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Ceratopea latiumbilicata
(C.M. Poulsen, 1927 †) (FOSSIL)
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Ceratopea laurentina
(Billings, 1859 †) (FOSSIL)
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Ceratopea lemonei
(Flower, 1968 †) (FOSSIL)
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Ceratopea lenticularis
(Flower, 1968 †) (FOSSIL)
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Ceratopea medfraensis
(Rohr & Blodgett, 1988 †) (FOSSIL)
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Ceratopea miser
(Billings, 1859 †) (FOSSIL)
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Ceratopea numeria
(Billings, 1865 †) (FOSSIL)
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Ceratopea obtusa
(Cleland, 1900 †) (FOSSIL)
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Ceratopea parva
Stauffer, 1937 † (FOSSIL)
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Ceratopea pygmaea
Stauffer, 1937 † (FOSSIL)
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Ceratopea sculpta
(Cullison, 1944 †) (FOSSIL)
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Ceratopea sinclairensis
O. Kobayashi, 1955 † (FOSSIL)
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Ceratopea unguis
E.L. Yochelson & Bridge, 1957 † (FOSSIL)
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Ceratopea vagrans
(Billings, 1865 †) (FOSSIL)
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Ceratopea wisei
Fix, 1975 † (FOSSIL)
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Genus: Orospira Butts, 1926 † (DB: 6 SP)
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Orospira bigranosa
Butts, 1926 † (FOSSIL)
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Orospira conica
Cullison, 1944 † (FOSSIL)
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Orospira depressa
Cullison, 1944 † (FOSSIL)
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Orospira elegantula
Cullison, 1944 † (FOSSIL)
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Orospira elevata
Cullison, 1944 † (FOSSIL)
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Orospira gainesvillensis
Cullison, 1944 † (FOSSIL)
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Genus: Raphistoma Hall, 1847 † (DB: 16 SP)
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Raphistoma alaskensis
Rohr & al., 1992 † (FOSSIL)
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Raphistoma apertum
Salter, 1859 † (FOSSIL)
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Raphistoma calyx
(Billings, 1859 †) (FOSSIL)
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Raphistoma coreanicum
O. Kobayashi, 1934 † (FOSSIL)
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Raphistoma crevieri
Billings, 1859 † (FOSSIL)
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Raphistoma cruciana
E.A.L. Kittl, 1899 † (FOSSIL)
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Raphistoma debganensis
(Horný, 1997 †) (FOSSIL)
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Raphistoma eucharis
Billings, 1865 † (FOSSIL)
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Raphistoma gubanovi
(Rohr, 1994 †) (FOSSIL)
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Raphistoma minuta
Yü, 1961 † (FOSSIL)
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Raphistoma pauper
(Billings, 1859 †) (FOSSIL)
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Raphistoma pelhamensis
Butts, 1926 † (FOSSIL)
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Raphistoma shakopeense
Stauffer, 1937 † (FOSSIL)
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Raphistoma stamineum
J.W. Hall, 1847 † (FOSSIL)
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Raphistoma striatum
(E. Emmons, 1842 †) (FOSSIL)
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Raphistoma vaurealense
Twenhofel, 1928 † (FOSSIL)
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Genus: Scalites Emmons, 1842 † (DB: 15 SP)
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Scalites alatum
E.F.R.K. Koken & J. Perner, 1925 † (FOSSIL)
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Scalites amanoi
(Kobayashi, 1958 †) (FOSSIL)
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Scalites angulatus
E. Emmons, 1842 † (FOSSIL)
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Scalites depressa
Longst, 1924 † (FOSSIL)
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Scalites irregulare
Kobayashi, 1958 † (FOSSIL)
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Scalites jonesi
(Kobayashi, 1959 †) (FOSSIL)
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Scalites kanesi
Kobayashi, 1930 † (FOSSIL)
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Scalites katoi
T. Kobayashi, 1934 † (FOSSIL)
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Scalites keizanensis
O. Kobayashi, 1934 † (FOSSIL)
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Scalites oradovekaiae
(Vostokova, 1964 †) (FOSSIL)
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Scalites peracutum
Ulrich & Scofield, 1897 † (FOSSIL)
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Scalites richmondensis
(Ulrich & Scofield, 1897 †) (FOSSIL)
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Scalites solitarius
(Endo, 1935 †) (FOSSIL)
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Scalites tamurai
O. Kobayashi, 1930 † (FOSSIL)
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Scalites tellerensis
Rohr, 1988 † (FOSSIL)
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