Sigmorthoceras sigmoidale Kobayashi
| 1934. | Sigmorthoceras sigmoidale Kobayashi Holotype Kobayashi, T. 1934b p. 414, pl. 21, figs. 1-3 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Paleozoic: |
| Kobayashi, T., 1934b: The Cambro-Ordovician formations and faunas of south Chosen. Palaeontology. Part 1. Middle Ordovician faunas. Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 3, pt. 8, pp. 329–519, pls. 1–44. (Reference No. 0084) |
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| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 82. |
