Uyeno, T. & Hasegawa, Y. & Nohara, T. & Adaniya, A. (1975)
Fossil Shark Teeth from Cretaceous and Tertiary Beds in Shikoku Island, Japan. [in Japanese] Memoirs of the National Science Museum, 8, 52–56

Uyeno, T. & Hasegawa, Y. & Nohara, T. & Adaniya, A. (1974)
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