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The first discovery of a fossil tooth belonging to the shark genus Heptranchias, with a new Pristiophorus spine, both from the Oligocene of Japan. Bulletin of the National Science Museum, Ser. C, 11(2), 195–200
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Fossil Chondrichthyes of Japan. Journal of the Geological Society of Japan, 78(11), 585–600
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On Cretaceous and Tertiary Fish Remains from the Hidaka and Yubari Districts in Hokkaido, Japan. [in Japanese] Memoirs of the National Science Museum, 5, 223–225
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Late Mesozoic and Cenozoic fish faunas of Japan. Island Arc, 3(4), 255–269
DOI: 10.1111/j.1440-1738.1994.tb00115.x