Classification of Symonds 2002
Fm. Neritidae Rafinesque 1815
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G. Nerita Linnaeus 1758
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G. Theodoxus Monfort 1810
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Subg. Theodoxus (Pictoneritina) Iredale 1936
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†Theodoxus (Pictoneritina) passyanus Deshayes 1864
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†Theodoxus (Pictoneritina) passyanus denslatus Symonds 2002
†Theodoxus (Pictoneritina) waltoni Symonds 2002
†Theodoxus globosus Sowerby 1823