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Naticidae
Naticidae, common name the moon snails or necklace shells, is a family of minute to large-sized predatory sea snails, marine gastropod molluscs in the clade Littorinimorpha. The shells of the species in this family are mostly rather globular in shape.
Naticidae is the only family in the superfamily Naticoidea.
It has been estimated that worldwide there are about 260–270 Recent species of naticid snails.〔 This group is assumed to have originated in the late Triassic or in the early Jurassic.〔 Members of this family can be recognized by the shape of their shells, distinct appearance or by their predatory behavior.〔
==Distribution==
Naticids are widely distributed and occur worldwide. The greatest diversity of both species and genera is found in tropical regions. Even so, naticid snails are also plentiful in temperate, Arctic and Antarctic waters.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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