833. THE THIRD ADDITION TO THE SILURIAN TRILOBITE FAUNA OF YOKOKURA-YAMA, SHIKOKU, JAPAN

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  • 833. 四国横倉山の志留紀三葉虫群への第 3 追加
  • 四国横倉山の志留紀三葉虫群への第3追加〔英文〕
  • シコク ヨコクラヤマ ノ シルルキ サンヨウチュウグン ヘ ノ ダイ 3 ツ

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Abstract

Seven species of trilobites including two new genera and three new species are here described from Mt. Yokokura. Metaleiolichas and Paraleiolichas are two new genera, each represented by a new species. A new species of Japonoscutellum is added to them. Two pygidia are new to the two known species and one pygidium is so well preserved that it is capable of emending the existing description. Finally, a free cheek is a new find of a species for its locality. Thus the previous knowledge of the Yokokura-yama fauna is well advanced with all of these specimens.

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