Early Carboniferous Ammonoid Dombarites from the Taishaku Limestone, Akiyoshi Belt, Southwest Japan

Masayuki Ehiro; Isao Nishikawa; Osamu Nishikawa

doi:10.2517/1342-8144-16.4.282

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Masayuki Ehiro,¹ Isao Nishikawa,² Osamu Nishikawa³

¹The Tohoku University Museum, Sendai 980-8578, Japan (e-mail: ) ehiro@m.tohoku.ac.jp
²Otsu 1797-1, Yuki, Jinsekikogen-cho, Jinseki-gun, Hiroshima 720-1812, Japan
³Mineral Industry Museum, Graduate School of Technology and Resource Science, Akita University, Akita 010-8502, Japan

Abstract

The Early Carboniferous ammonoid Dombarites taishakuensis sp. nov. is described from the Dangyokei Formation, which is the lowermost formation of the Taishaku Limestone in the Akiyoshi Belt, Southwest Japan. This is the first described ammonoid from the Taishaku Limestone and the first record of the genus Dombarites from the Panthalassa region. The age of D. taishakuensis is probably early Serpukhovian based on the ages of morphologically similar species of Dombarites.

Citation Download Citation

Masayuki Ehiro, Isao Nishikawa, and Osamu Nishikawa "Early Carboniferous Ammonoid Dombarites from the Taishaku Limestone, Akiyoshi Belt, Southwest Japan," Paleontological Research 16(4), 282-288, (31 January 2013). https://doi.org/10.2517/1342-8144-16.4.282

Received: 1 April 2012; Accepted: 1 June 2012; Published: 31 January 2013

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