島根県松江市美保関町の下部中新統古浦層より発見された陸生脊椎動物（予報）

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タイトル別名
  • A preliminary report on the terrestrial vertebrates from the Lower Miocene Koura Formation of Mihonoseki, Matsue, Shimane Prefecture, Southwest Japan
  • シマネケン マツエシ ミホノセキマチ ノ カブ チュウシントウ コウラソウ ヨリ ハッケン サレタ リクセイ セキツイ ドウブツ ヨホウ

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説明

<p>Diverse vertebrate fossils of more than 160 fragmental bones, teeth and footprints, including cyprinid fishes, reptiles (turtles and crocodiles), and mammals (a rodent, a carnivora, and artiodactyls), were collected from the Lower Miocene Koura Formation at Sai and Karubi, Mihonoseki, Matsue, Shimane Prefecture, Southwest Japan. The mode of occurrence and preservation of these fossils imply that sedimentary environment is the lake bottom near to the river mouth were woods and larger vertebrate remains are transported with occasional water currents. Sedimentary facies and sediment compositions of Koura Formation indicate the possibility that the bone beds of the formation were formed with great influence of volcanic activities.</p>

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