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Fossil elasmobranchs from the Pleistocene Shimosa Group, central Japan. [in Japanese, with English abstract] Bulletin of the Mizunami Fossil Museum, 21, 47–56

Itoigawa, J. & Nishimoto, N. & Kuroda, M. & Horié, H. & Naruse, A. & Watanabe, Y. (1975)
Carcharodon carcharias (Linné) - shark teeth - from the Pliocene Na-arai formation, Coshi Peninsula, environs of Tokyo, Japan. [in Japanese, with English abstract] Bulletin of the Mizunami Fossil Museum, 2, 91–102