885. FOORDICERAS AND DOMATOCERAS (NAUTILOID CEPHALOPODS) FROM THE UPPER PERMIAN TOYOMA FORMATION, SOUTHERN KITAKAMI MASSIF, NORTHEAST JAPAN

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  • 885. 南部北上山地の上部ペルム系登米層産ノーチロイド Foordiceras および Domatoceras
  • 南部北上山地の上部ペルム系登米層産ノーチロイドFoordicerasおよびDomatoceras〔英文〕
  • ナンブ キタカミ サンチ ノ ジョウブ ペルムケイ トヨマソウサン ノーチロイ

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Abstract

Two specimens of nautiloids, identified as Foordiceras cf. F. wynnei and Domatoceras ogatsuense, n. sp., are described from the Lower Toyoman Series (Upper Permian, Dzhulfian) in the Southern Kitakami Massif. The genus Foordiceras is first described from the Dzhulfian in Japan, and the genus Domatoceras is also first recorded from Japan in this paper. These nautiloids are closely related to those from the Dzhulfian beds of the Central Tethys.

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