| Stylommatophora (Order) |
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| Stylommatophora Punctoidea Morse, 1864 (Superfamily) |
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| Endodontidae Pilsbry, 1895 (Family) |
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| Endodonta Albers, 1850 (Genus) |
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| Helicodiscus Morse, 1864 (Genus) |
C | | | | | | | | | | details |
| Janulus (Genus) |
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| Nesodiscus Thiele, 1929 (Genus) |
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| Philalanka Godwin-Austen, 1898 (Genus) |
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| Ptychodon Germain, 1932 (Genus) |
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| Stephanoda Albers, 1860 (Genus) |
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| Toltecia (Genus) |
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| Trachycystis Pilsbry, 1892 (Genus) |
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| Zilchogyra Weihrauch, 1965 (Genus) |
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| Endodontidae subfam. Discinae (Subfamily) |
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| Discus (Genus) |
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| Endodontidae subfam. Endodontinae (Subfamily) |
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| Phortion (Genus) |
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| Trachycistis (Genus) |
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