First record of Himantura uarnak in Japan with comments to the Himantura uarnak species complex [in Japanese]. Report of Japanese Society for Elasmobranch Studies, 54, 1–5
Dermal scales of Carcharocles megalodon (Agassiz) from the Miocene Mizunami Group, central Japan - Studies on dermal scales of some elasmobranch fossils from Japan. Part 1. Bulletin of the Mizunami Fossil Museum, 19, 269–271
Miocene fossils of the Mizunami group, central Japan. 3. Elasmobranchs. Monographs of the Mizunami Fossil Museum, 5, 1–99