Carboniferous Palaeotextulariid Foraminifers from the Akiyoshi Limestone Group, Southwest Japan

Nine species of Palaeotextulariidae are described and illustrated from the lower part of the Akiyoshi Limestone group; Palaeotextularia consobrina, P. vulgaris, P. sp. A, Cribrostomum sp., Deckerellina sp., Deckerella sp., Climacammina antiqua, C. volgensis, C. sp. A. The zones below the Millerella sp. A zone are characterized with the dominance of Palaeotextularia, while the Millerella sp. A zone and the overlying ones with higher percentage of Climacammina. The progressive change of chamber arrangement, aperture pattern and test size as well as the stratigraphic distribution bear close resemblance to what have been observed in the British Visean and Namurian.