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Genus: Spirodentalium Walcott, 1891 † (DB: 2 SP)
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Spirodentalium osceola
Walcott, 1890 † (FOSSIL)
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Spirodentalium walcotti
B.F. Howell, 1946 † (FOSSIL)
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Genus: Cassitella Malinky & Skovsted, 2004 † (DB: 1 SP)
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Cassitella baculata
Malinky & Skovsted, 2004 † (FOSSIL)
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Genus: Coleolella Missarzhevskii, 1969 † (DB: 1 SP)
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Coleolella billingsi
A.V. Sysoev, 1962 † (FOSSIL)
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Genus: Coleolus Hall, 1879 † (DB: 2 SP)
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Coleolus aciculum
J.W. Hall, 1879 † (FOSSIL)
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Coleolus trigonus
A.V. Sysoev, 1962 † (FOSSIL)
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