Takahashi, Akio, Kimihiko Ōki, Takahiro Ishido, and Ren Hirayama. “A New Species of the Genus Ocadia (Testudines: Geoemydidae) from the Middle Miocene of Tanegashima Island, Southwestern Japan and Its Paleogeographic Implications”. Zootaxa 3647, no. 4 (May 13, 2013): 527–540. Accessed April 20, 2025. https://mapress.com/zt/article/view/zootaxa.3647.4.3.