Itoigawa, J. & Nishimoto, N. & Karasawa, H. & Okumura, Y. (1985)
Miocene fossils of the Mizunami group, central Japan. 3. Elasmobranchs. Monographs of the Mizunami Fossil Museum, 5, 1–99

Itoigawa, J. & Nishimoto, N. & Hiroyuki, A. (1977)
Cretaceous fossil elasmobranchs from japan (first report). Bulletin of the Mizunami Fossil Museum, 4, 119–138

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