<i>Purdonella</i> (Spiriferida, Brachiopoda) from the Carboniferous Ichinotani Formation, Fukuji, Hida Gaien Belt, central Japan, and its palaeobiogeographical significance

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  • 飛騨外縁帯福地の石炭系一の谷層産腕足類パードネラとその古生物地理学的重要性
  • ヒダ ガイエンタイ フクジ ノ セキタンケイ イチ ノ タニソウサン ワン ソクルイ パードネラ ト ソノ コ セイブツ チリガクテキ ジュウヨウセイ

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Abstract

A Carboniferous spiriferid brachiopod Purdonella tschernyschewiformis (Ozaki, 1931) was collected from a piece of limestone float, derived from the Upper Carboniferous (Bashkirian) limestone of the Ichinotani Formation in the Mizuboradani Valley, Fukuji area, Hida Gaien Belt, central Japan. Purdonella has mainly been reported from the Upper Carboniferous and Lower Permian of the Boreal region, and P. tschernyschewiformis has been described from the Upper Carboniferous (Bashikirian-Moscovian) of Northeast China (Liaoning) and Northwest China (Xinjiang). Therefore, the occurrence of P. tschernyschewiformis from the Upper Carboniferous limestone of Fukuji indicates that the Hida Gaien region, including the Fukuji area, was part of the continental shelf along the eastern margin of North China (Sino-Korea) during the Late Carboniferous.

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