874. GEMMULOBORSONIA, A NEW GENUS OF THE FAMILY TURRIDAE (GASTROPODA) FROM THE PLIO-PLEISTOCENE CABATUAN FORMATION, NORTHWEST LUZON

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  • 874. Gemmuloborsonia, 北西ルソンの鮮新-更新統の Calatuan 層産の Turridae 科(腹足類)の一新属
  • Gemmuloborsonia,北西ルソンの鮮新-更新統のCalatuanのTurridae科(腹足類)の1新属〔英文〕
  • Gemmuloborsonia ホクセイ ルソン ノ センシン コウシントウ

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Gemmuloborsonia, a new genus of the Borsoniinae, Turridae, Neogastropoda is proposed here on the type-species, G. fierstinei, sp. nov. from the Plio-Pleistocene Cabatuan Formation on Tambac and other islands in Tambac Bay, the Bolinao district, Northwest Luzon. Gemmuloborsonia shows superficial similarity to Kuroshioturris Shuto, 1961, of the Turrinae in the shell-profile, protoconch, sculpture and anal sinus, but is readily distinguished from the latter in being provided with a distinct columellar plait. The genus includes four species from the Upper Miocene and Plio-Pleistocene of the Mediterranean and Malayan regions.

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