| Ptychatractus | |
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| Ptychatractus occidentalis (a species within the genus) | |
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| Genus: | Ptychatractus Stimpson, 1865
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Ptychatractus is a genus of sea snails, marine gastropod mollusks in the family Ptychatractidae.[1]
- ^ Ptychatractus Stimpson, 1865. Retrieved through: World Register of Marine Species on 29 April 2010.