| Matsumoto, T., Muramoto, K., Takahashi, T., Yamashita, M. and Kawashita, Y., 1986: On Neocrioceras spinigerum (Jimbo), a species of Cretaceous heteromorph ammonoids. Studies of the Cretaceous ammonites from Hokkaido 50. Transactions and Proceedings of the Palaeontological Society of Japan. New Series, no. 143, pp. 463–474, pls. 93–94. (Reference No. 0594) |
| Tanabe, K., Ito, Y., Moriya, K. and Sasaki, T., 2000: Database of Cretaceous ammonite specimens registered in the Department of Historical Geology and Paleontology of the University Museum, University of Tokyo. The University Museum, The University of Tokyo, Material Reports, no. 37, pp. i–iv + 1–509. (Reference No. 0879) |
