<紀要論文>
Upper Triassic Ammonites from Okinawa-jima Part II : Paleontological Study of the Ryukyu Islands-III

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概要 An ammonoid zone, the Sandlingites aff. oribasus zone, has been established in the Nakijin Formation with a note on partial revision of stratigraphy of this formation. Discussions of correlation are g...iven with respect to the two ammonoid zones already known as well as the intervening new one. The Sandlingites aff. oribasus zone in Okinawa is most probably correlated to the Tropites dilleri zone of the Triassic Carnian standard zonal scheme in North America. Following Part I selected four species of Upper Triassic ammonoid, Epiceratites? motobuensis sp. nov., Helictites sp., Thisbites nakijinensis sp. nov., and Hypocladiscites subaratus (MOJSISOVICS) are described in this article.続きを見る

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登録日 2015.11.09
更新日 2021.02.18

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