Maruyama, Toshiaki (1984): Miocene diatom biostratigraphy of onshore sequences on the Pacific side of Northeast Japan, with reference to DSDP Hole 438A; Part 2. Tohoku University, Faculty of Science, Institute of Geology and Paleontology, Sendai, Japan, Science Reports of the Tohoku University. Series 2: Geology = Tohoku Daigaku Rika Hokoku. Dai 2: Shu Chishitsugaku, 55 (1), 77-140, georefid:1986-015482

West: 129.0000 East: 147.0000 North: 45.0000 South: 30.0000
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