Classification of Gabb 1866
G. Turcica Adams 1854
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G. Cancellaria Lamarck 1799
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Subg. Cancellaria (Euclia) Adams and Adams 1854
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†Cancellaria (Euclia) tritonidea Gabb 1866
†Cancellaria (Euclia) vetusta Gabb 1866
G. Columbella Lamarck 1799
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Subg. Columbella (Alia) Adams and Adams 1853 [dovesnail]
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†Columbella (Alia) richthofeni Gabb 1866
G. Ostrea Linnaeus 1758
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†Ostrea atwoodii Gabb 1866
†Ostrea bourgeoisii Rémond 1863
†Ostrea cerrosensis Gabb 1866
†Ostrea tayloriana Gabb 1866
†Ostrea veatchii Gabb 1866
G. Chione von Mühlfield 1811
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†Chione mathewsonii Gabb 1866
†Chione whitneyi Gabb 1866
G. Gari Schumacher 1817
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G. †Astrodapsis Conrad 1856
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†Astrodapsis tumidus Rémond 1863
†Astrodapsis whitneyi Rémond 1863
G. †Pleurotoma Lamarck 1800
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Subg. Pleurotoma (Surcula) Adams and Adams 1853
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†Pleurotoma (Surcula) carpenteriana Gabb 1866
Pleurotoma (Surcula) perversa Gabb 1865
†Pleurotoma voyi Gabb 1866
G. †Clavella Swainson 1835
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†Clavella gravida Gabb 1866
†Clavella sinuata Gabb 1866