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1 January 2014 Early Permian (Asselian) Ammonoids from the Taishaku Limestone, Akiyoshi Belt, Southwest Japan
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Abstract

An ammonoid fauna comprising eight species belonging to seven genera (Agathiceras, Neoglaphyrites, Emilites, Somoholites, Marathonites, Eoasianites and Metapronorites) is described from the Uyamano Formation (Taishaku Limestone) at Miharanoro in the Akiyoshi Belt, Southwest Japan. The fauna includes two new species: Neoglaphyrites discoidalis and Somoholites miharanoroensis. The genera Emilites, Somoholites, Marathonites, and Metapronorites are described from Japan for the first time. From the coexisting interval of these seven genera, the age of the Miharanoro fauna is between the Kasimovian and Asselian, being very probably Asselian because some species show close resemblance to those known from Asselian strata. This is the most diverse early Permian ammonoid fauna ever known from Japan.

© by the Palaeontological Society of Japan
Masayuki Ehiro, Osamu Nishikawa, and Isao Nishikawa "Early Permian (Asselian) Ammonoids from the Taishaku Limestone, Akiyoshi Belt, Southwest Japan," Paleontological Research 18(1), 51-63, (1 January 2014). https://doi.org/10.2517/2014PR006
Received: 17 June 2013; Accepted: 1 October 2013; Published: 1 January 2014
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