BIOSTRATIGRAPHY AND CORRELATION

Faculty of Science, Hokkaido University, No. 1526) Permian biostratigraphy is described for seven selected districts in Japan. A new biostratigraphic scheme is presented for the Permian in the Kitakami mountains, based on a number of assemblage zones. New names, Maehama and Nabekoshi Stages are proposed in the Toyoma Series of the Kitakami mountains. An attempt is made to correlate the Japanese Permian in the studied districts. Intruduction International Subcommission on Permian Stratigraphy (Pn,sident- Prof. D.L. Stepanov) of the lUGS is planning to correlate eventually the World Permian. Dr. E.Ya. Leven of the USSR'and Minato have been asked to prepare a correlation table of the Permian in the Tethys province. At the request of Dr. Leven Minato in cooperation with Kato made a draft of correlation chart of the Permian of Japan, and sent it to Dr. Leven sometime ago. Then the present authors jointly prepared the second, modified version of the first draft, with explanatory text. We sent this manuscript also to Dr. Leven in 1976