Ueno, K.; Mizuno, Y. (1993). Middle and Upper Carboniferous fusulinaceans from the Taishaku Limestone Group, southwest Japan. Transactions and proceedings of the Paleontological Society of Japan. New series. 170(953): 133-158.

304436

10.14825/prpsj1951.1993.170_133 [view]

Ueno, K.; Mizuno, Y.

1993

170(953): 133-158

Publication

https://www.jstage.jst.go.jp/article/prpsj1951/1993/170/1993_170_133/_pdf/-char/en

Available for editors   [request]

Middle and Upper Carboniferous fusulinacean biostratigraphy of the Taishaku Limestone Group in the Unata area situated in the southern part of the Taishaku Plateau, Hiroshima Prefecture, is examined and five fusulinacean zones; the Fusulinella bingoensis, Fusulina quasicylindrica, and Obsoletes cf. obsoletus-Protriticites ovatus Zones in the uppermost part of the Eimyoji Formation, and the Triticites (Rauserites) stuckenbergi-Jigulites dagmarae and Occidentoschwagerina chatcalica Zones in the lowermost part of the Uyamano Formation in ascending order, are established. Based upon the faunal similarity of fusulinaceans between the Taishaku Limestone Group and the Carboniferous standard and reference sections of the Russian Platform and other regions, the Fusulinella bingoensis and Fusulina quasicylindrica Zones are correlated with the Myachkovsky Horizon of the late Moscovian, the Obsoletes cf. obsoletus-Protriticites ovatus Zone with the lower Kasimovian, and the Triticites (Rauserites) stuckenbergi-Jigulites dagmarae and Occidentoschwagerina chatcalica Zones with the Gzhelian in the Russian Carboniferous standard stratigraphic scheme. This fact reveals that at least the lowermost part of the Uyamano Formation in the Unata area, which has long been regarded as Permian, is in the Upper Carboniferous. In this paper, all the identified fusulinaceans including one new species, Fusulinella bingoensis, sp. nov., are described. The present report provides important evidence not only on the Middle and Upper Carboniferous fusulinacean biostratigraphy of the Taishaku Limestone Group but also on the biostratigraphic significance of the Fusulina fauna in the Akiyoshi "Terrane."

Foraminifera

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