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1 July 2018 Missourian (Kasimovian, Late Pennsylvanian) Conodonts from Limestone Boulders, Mizuboradani Valley, Gifu Prefecture, Central Japan
Takumi Maekawa, Toshifumi Komatsu, Gengo Tanaka, Mark Williams, Christopher P. Stocker, Masatoshi Okura, Akihiro Umayahara
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Abstract

Two Late Pennsylvanian conodont species, Gondolella sublanceolata Gunnell and Idiognathodus sulciferus Gunnell, were extracted from limestone boulders in the Mizuboradani Valley, Fukuji district, central Japan. These provide the first evidence of Missourian (Kasimovian) cosmopolitan conodonts in the Akiyoshi and Hida Gaien belts, Inner Zone of Japan. The limestone boulders might be derived from the Ichinotani Formation and/or from limestone clasts in conglomerates of the Permian Sorayama Formation that crop out in the Mizuboradani Valley.

© by the Palaeontological Society of Japan
Takumi Maekawa, Toshifumi Komatsu, Gengo Tanaka, Mark Williams, Christopher P. Stocker, Masatoshi Okura, and Akihiro Umayahara "Missourian (Kasimovian, Late Pennsylvanian) Conodonts from Limestone Boulders, Mizuboradani Valley, Gifu Prefecture, Central Japan," Paleontological Research 22(3), 279-289, (1 July 2018). https://doi.org/10.2517/2017PR023
Received: 23 February 2017; Accepted: 20 November 2017; Published: 1 July 2018
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KEYWORDS
conodont
Ichinotani Formation
Late Pennsylvanian
limestone boulders
Mizuboradani Valley
Sorayama Formation
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