Species (9)

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Retusa

  Retusa truncatula Bruguiere 1792

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Retusa

  Retusa obtusa Montagu 1803

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Volvula

  Volvula acuminata

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Retusa

  Retusa elongata

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Retusa

  Retusa retusa

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Retusa

  Retusa subangiostoma

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Volvulella

  Volvulella acuminata

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Utriculus

  Utriculus brasiliara

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  Metazoa Mollusca Gastropoda Opisthobranchia Retusidae Utriculus

  Utriculus nebulosus

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