828. EARLY PERMIAN CEPHALOPODS FROM THE MIZUYAGADANI FORMATION, FUKUJI DISTRICT, CENTRAL JAPAN

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  • 828. 岐阜県福地地域の水屋ヶ谷層から産出したペルム紀前期頭足類
  • 岐阜県福地地域の水屋ケ谷層から産出したペルム紀前期頭足類〔英文〕
  • ギフケン フクチ チイキ ノ ミズヤガタニソウ カラ サンシュツシタ ペルムキ

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Two cephalopod species (Bitaunioceras undulatum Niko and Nishida, sp. nov. and pseudorthoceratid, gen. et sp. indet.) are described from the Permian Mizuyagadani Formation, Fukuji district, Gifu Prefecture, central Japan. The morphology of the septal necks and organic deposits of Bitaunioceras undulatum suggest that this genus should be referred to the Pseudorthoceratidae. Associated microfauna with these cephalopods is dominated by sessile forms of smaller foraminifers which indicate an Early Permian (Sakmarian) time.

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