Fossil Shark Teeth from Cretaceous and Tertiary Beds in Shikoku Island, Japan. [in Japanese] Memoirs of the National Science Museum, 8, 52–56
Fossil fishes from Okinawa-jima (Studies of paleovertebrate fauna of the Ryukyu Islands, Japan, Part IV). Memoirs of the National Museum of Nature and Science, 7, 53–60
A fossil shark tooth of Carcharodon megalodon from Miyako-jima (Studies of the Paleovertebrate Fauna of Ryukyu Islands, Japan. Part V). [in Japanese, with English summary] Memoirs of the National Science Museum, 7, 61–64