Iijima, Masaya; Takahashi, Keiichi; Kobayashi, Yoshitsugu (2016). "The oldest record of Alligator sinensis from the Late Pliocene of Western Japan, and its biogeographic implication". Journal of Asian Earth Sciences. 124: 94–101. Bibcode:2016JAESc.124...94I. doi:10.1016/j.jseaes.2016.04.017.
Iijima, Masaya; Takahashi, Keiichi; Kobayashi, Yoshitsugu (2016). "The oldest record of Alligator sinensis from the Late Pliocene of Western Japan, and its biogeographic implication". Journal of Asian Earth Sciences. 124: 94–101. Bibcode:2016JAESc.124...94I. doi:10.1016/j.jseaes.2016.04.017.