Leptosphinctes ( Polyptychoceras ) sp.
| 1974. | Leptosphinctes (Polyptychoceras) sp. Takahashi, H. 1974a pl. J-3, fig. 7 |
| 1962. | Leptosphinctes cf. martiusi Buckman non d'Orbigny Sato, T. 1962 p. 81, pl. 2, fig. 3; pl. 4, fig. 14 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Mesozoic: |
| Sato, T., 1962: Études biostratigraphiques des ammonites du Jurassique du Japon. Mémoires de la Société Géologique de France, vol. 41, pt. 1, pp. 1–122, pls. 1–10. (Reference No. 0276) |
| Takahashi, H., 1974a: Ammonoid fossils of Japan, 1 (Jurassic ammonites, 2 — Hashiura group and Karakuwa group). Atlas of Japanese fossils, no. 35-206, 4 pp., pl. J-3. Tsukiji Shokan Publishing Co., Ltd., Tokyo. (in Japanese) (Reference No. 0620) |
| Ichikawa, T., 1988, no. 15, p. 184. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 253. |
