本州沖の深海から採集された新種ナンカイシロウリガイ

書誌事項

タイトル別名
  • An Unusual Vesicomyid Bivalve, Calyptogena nankaiensis n. sp. from Bathyal Depth off Honshu, Japan
  • Unusual Vesicomyid Bivalve Calyptogena

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説明

Two specimens of Calyptogena collected by the submersible Shinkai-2000 from Ryuyo Submarine Canyon of the Nankai Trough off the Pacific coast of middle Honshu (Tokai Region) are new to science. This species is characterized by solid, elongate oval shell that is ornamented by distinct concentric ribs, strong cardinal armature, and unusually distinct and deep pit for anterior pedal retractor scar beneath the anterior lateral tooth.

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