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Paleontological Research
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Abstract
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.
We are grateful to Tatsuya Hayashi (Kyushu University) and Naoki Ikegami (Mifune Dinosaur Museum) for taking SEM images of conodonts. We thank Keisuke Ishida (Tokushima University), an anonymous reviewer and the associate editor Yasunari Shigeta (National Museum of Nature and Science) for valuable comments on the draft. Part of this study was supported by the JSPS-VAST Joint Research Program, Grants-in-Aid from the Japan Society for the Promotion of Science (16K05593 to Komatsu). Mark Williams and Christopher P. Stocker thank the Leverhulme Trust (International Network Grant IN-2014-025 ‘Assembling the Early Palaeozoic terranes of Japan’).
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