Classification of Squires and Saul 2003
Subfm. Buccininae Rafinesque 1815
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Fm. Cancellariidae Gray 1853
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Fm. Fasciolariidae Gray 1853
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Fm. Trochidae Rafinesque 1815 [top snail]
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G. Cidarina Dall 1909
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†Cidarina beta Squires and Saul 2003
†Cidarina cretacea Squires and Saul 2003
Subfm. †Melongeninae Gill 1871
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