| Gastropoda Cuvier, 1797 (Class) |
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| Gastropoda Orthogastropoda Ponder & Lindberg, 1996 (Subclass) |
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| Gastropoda Orthogastropoda Opisthobranchia Milne Edwards, 1848 (Superorder) |
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| Cephalaspidea P. Fischer, 1883 (Order) |
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| Aplustridae (Family) |
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| Cephalaspidea Bulloidea Lamarck, 1801 (Superfamily) |
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| Bullidae Lamarck, 1801 (Family) |
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| Haminoeidae Pilsbry, 1895 (Family) |
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| Smaragdinellidae Adams & Adams, 1854 (Family) |
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| Cephalaspidea Philinoidea Gray, 1850 (Superfamily) |
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| Aglajidae Pilsbry, 1895 (Family) |
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| Cylichnidae A. Adams, 1850 (Family) |
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| Gastrocopteridae Swainson, 1840 (Family) |
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| Hamineidae (Family) |
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| Philinidae Gray, 1850 (Family) |
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| Philinoglossidae Hertling, 1932 (Family) |
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| Plusculidae Marcus, 1953 (Family) |
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| Retusidae Thiele, 1925 (Family) |
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| Scaphandridae (Family) |
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| Tornatinidae P. Fischer, 1887 (Family) |
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| Cephalaspidea Runcinoidea Adams & Adams, 1854 (Superfamily) |
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| Ildicidae Burn, 1963 (Family) |
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| Runcinidae Adams & Adams, 1854 (Family) |
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SysTax - Browse Taxonomy (beta)