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8 April 2019 Early Carboniferous (Early Visean) Brachiopod Fauna from the Middle Part of the Arisu Formation in the Shimoarisu Area, South Kitakami Belt, Japan
Jun-Ichi Tazawa, Yasufumi Iryu
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Abstract

In this paper, we describe an early Carboniferous (early Visean) brachiopod fauna from the middle part of the Arisu Formation in the type locality, Shimoarisu, South Kitakami Belt, northeastern Japan. The Shimoarisu fauna consists of 11 species in seven genera: Ovatia elongata, Rhipidomella michelini, Schizophoria resupinata, Sch. pinguis, Sch. woodi, Unispirifer striatoconvolutus, Unispirifer sp., Kitakamithyris hikoroitiensis, Syringothyris texta, S. platypleura and Pseudosyrinx jumonjiensis. The fauna is assigned to the early Visean. In terms of palaeobiogeography, the Shimoarisu fauna has an affinity with those of the brachiopod province that developed in present-day northwestern–northeastern China in the early Carboniferous. Therefore, South Kitakami, including the Shimoarisu area, was probably located near and to the east of North China in the early Visean.

© by the Palaeontological Society of Japan
Jun-Ichi Tazawa and Yasufumi Iryu "Early Carboniferous (Early Visean) Brachiopod Fauna from the Middle Part of the Arisu Formation in the Shimoarisu Area, South Kitakami Belt, Japan," Paleontological Research 23(2), 95-109, (8 April 2019). https://doi.org/10.2517/2018PR012
Received: 12 November 2017; Accepted: 18 June 2018; Published: 8 April 2019
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KEYWORDS
Arisu Formation
Brachiopoda
Shimoarisu
South Kitakami Belt
Visean
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