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1 September 2008 Late Paleozoic and Mesozoic foraminifers contained in limestone fragments of the Kamade Breccia of the Upper Cretaceous Aioi Group from Kamade, northeastern part of Aioi, Hyogo, Japan
Fumio Kobayashi
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Abstract

Age distribution and provenance of limestone fragments contained in the Kamade Breccia of the Upper Cretaceous Aioi Group, distributed in the western part of Hyogo prefecture, Japan were considered. Among 67 samples examined, 19 are Carboniferous (Serpukhovian to Gzhelian), 20 are Permian (Sakmarian to Capitanian), and two are Triassic (early Anisian). Two samples of conglomeratic limestone contain both Carboniferous and Permian foraminifers. The ages of the other 28 samples are indeterminable. Of these 28, four are assumed to be post-Triassic. Carboniferous and Permian limestone fragments and a subduction-related broken limestone pebble of unknown age are concluded to have been derived from the Akiyoshi Terrane, and early Anisian ones from the Maizuru Terrane. The source of the post-Triassic boulders and cobbles consisting of very fine-grained lime-mudstone cannot be determined because there is no plausible limestone in Japan from which they could have been derived. Systematically described fusulinoideans comprise seven species of ozawainellids, fusulinids, and schwagerinids. They are Eostaffella kanmerai, Eostaffella yowarensis, Pseudofusulinella itoi, Rauserites stuckenbergi, Schwageriniformis schwageriniformis, Triticites simplex and Paraschwagerina sp. This paper is the latest in a series of works whose aim is a complete description of the Hyogo foraminifera.

Fumio Kobayashi "Late Paleozoic and Mesozoic foraminifers contained in limestone fragments of the Kamade Breccia of the Upper Cretaceous Aioi Group from Kamade, northeastern part of Aioi, Hyogo, Japan," Paleontological Research 12(3), 237-253, (1 September 2008). https://doi.org/10.2517/1342-8144-12.3.237
Received: 2 August 2007; Accepted: 1 March 2008; Published: 1 September 2008
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