Classification of Ponder and Lindberg 1997

Cl. Gastropoda Cuvier 1797 [snail]
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Subcl. Orthogastropoda Ponder and Lindberg 1997
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Superor. Vetigastropoda Salvini-Plawen 1980
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Superfm. Trochoidea Rafinesque 1815
Superor. †Heterobranchia Gray 1840
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Superfm. †Pyramidelloidea Gray 1840
Fm. Rissoidae Gray 1847
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G. Alvania Risso 1826
G. Folinia Crosse 1868
Superor. Hypsogastropoda Ponder and Lindberg 1997
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Subor. †Ptenoglossa Gray 1853