Eogunnarites unicus (Yabe)
| 1991. | Eogunnarites unicus (Yabe) Holotype Matsumoto, T. 1991 p. 71, pl. 15, fig. 3 |
| 1954. | Eogunnarites unicus (Yabe) Holotype Wright, C. W. & Matsumoto, T. 1954 p. 126, pl. 8, fig. 3a, b PreviousNo: I-255 |
| 1904. | Olcostephanus unicus Yabe Holotype Yabe, H. 1904 p. 28, pl. 6, fig. 5a, b PreviousNo: I-255 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: Ammonitida: Ammonitina: Desmoceratoidea: Kossmaticeratidae: |
| Geologic Time: | Mesozoic: Cretaceous: Late Cretaceous: |
| Horizon: | Yezo Group: |
| Locality: | Japan: Hokkaido: Sorachi: Mikasa: Ikushumbetsu: Kamitakambe, Ikushumbetsu near Poronai: |
| Matsumoto, T., 1991: The mid-Cretaceous ammonites of the family Kossmaticeratidae from Japan. Palaeontological Society of Japan, Special Papers, no. 33, pp. i–vi + 1–143, pls. 1–31. (Reference No. 0662) |
| 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) |
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| Wright, C. W. and Matsumoto, T., 1954: Some doubtful Cretaceous ammonite gerera from Japan and Saghalien. Memoirs of the Faculty of Science, Kyushu University, Series D, vol. 4, no. 2, pp. 107–134, pls. 7–8. (Reference No. 0319) |
| Yabe, H., 1904: Cretaceous Cephalopoda from the Hokkaido. Part 2. Turrilites, Helicoceras, Heteroceras, Nipponites, Olcostephanus, Desmoceras, Hauericeras, and an undetermined genus. Journal of the College of Science, Imperial University of Tokyo, vol. 20, art. 2, pp. 1–45, pls. 1–6. (Reference No. 0323) |
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| Ichikawa, T., 1995, no. 33, p. 33. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 294. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 297. |
| Tanabe et al., 2000, no. 37, p. 67. |
| Tanabe et al., 2000, no. 37, p. 163. |
| Tanabe et al., 2000, no. 37, p. 65. |
