Yokoyamaoceras ishikawai (Jimbo)
| 1993. | Yokoyamaoceras ishikawai (Jimbo) Maeda, H. 1993 p. 124 |
| 1955. | Yokoyamaoceras jimboi Matsumoto Matsumoto, T. 1955a p. 153 PreviousNo: I-350 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Mesozoic: |
| 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) |
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| Matsumoto, T., 1955a: Family Kossmaticeratidae from Hokkaido and Saghalien. Studies on the Cretaceous ammonites from Hokkaido and Saghalien 6. Japanese Journal of Geology and Geography, vol. 26, nos. 1–2, pp. 115–164, pls. 8–10. (Reference No. 0221) |
| Ichikawa, T., 1995, no. 33, p. 31. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 216. |
