First oncocerid cephalopod from Japan

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概要

• 論文の詳細を見る

• The two Lochkovian (Early Devonian) specimens of karocerartid cephalopod from the Fukuji Formation, Gifu Prefecture represent the first record of the order Oncocerida in Japan, and constitute the basis for a new species, Ankyloceras takii. This species is morphologically closest to Ankyloceras accomodatum Zhuravleva and A. virgulaforme (Foerste) both from the early Lochkovian of Novaya Zemlya. Paleobiogeographic implications of the present discovery are discussed.(Communicated by Tatsuro MATSUMOTO, M. J. A., April 14, 2003)

• 日本学士院の論文

著者

• NIKO Shuji

  Faculty of Integrated Arts and Sciences, Hiroshima University

• NISHIDA Tamio

  Faculty of Culture and Education, Saga University

関連論文

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• Integrated biostratigraphic and radiometric study on the Lower Cenomanian (Cretaceous) of Hokkaido, Japan
• A study of Mrhiliceras (Cretaceous Ammonoidea) : Studies of the Cretaceous ammonites from Hokkaido and Sakhalin-XCIII

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