Yokoyamaoceras ishikawai (Jimbo)
| 1993. | Yokoyamaoceras ishikawai (Jimbo) Maeda, H. 1993 p. 107, fig. 6-4 |
| 1954. | Neopuzosia japonica (Spath) Matsumoto, T. 1954b p. 91 PreviousNo: I-3434 |
| Condition: | Present |
| Material: | Macroconch |
| Taxonomy: | Mollusca: Cephalopoda: Ammonitida: Ammonitina: Desmoceratoidea: Kossmaticeratidae: |
| Geologic Time: | Mesozoic: Cretaceous: Late Cretaceous: Santonian - Campanian: |
| Horizon: | Upper Yezo Group: |
| Locality: | Japan: Hokkaido: Nakagawa: Saku: T-472, the Tannosawa Valley, a tributary of the Abeshinai River: |
| Maeda, H., 1993: Dimorphism of Late Cretaceous false-Puzosiine ammonites, Yokoyamaoceras Wright and Matsumoto, 1954 and Neopuzosia Matsumoto, 1954. Transactions and Proceedings of the Palaeontological Society of Japan. New Series, no. 169, pp. 97–128. (Reference No. 0659) |
 |
| Matsumoto, T., 1954b: Family Puzosiidae from Hokkaido and Saghalien. Studies on the Cretaceous Ammonoidea from Hokkaido and Saghalien 5. Memoirs of the Faculty of Science, Kyushu University, Series D, vol. 5, no. 2, pp. 69–118, pls. 9–23. (Reference No. 0220) |
| 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) |
 |
| Ichikawa, T., 1995, no. 33, p. 30. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 215. |
| Tanabe et al., 2000, no. 37, p. 490. |
