Euchasma wanwanense (Kobayashi)
| 1976. | Euchasma wanwanense (Kobayashi) Holotype Pojeta, J. Jr. & Runnegar, B. 1976 p. 68, pl. 28, figs. 4-7 |
| 1933. | Wanwanella wanwanensis Kobayashi Holotype Kobayashi, T. 1933a p. 286, pl. 7, fig. 8a, b |
| Condition: | Present |
| Taxonomy: | Arthropoda: |
| Geologic Time: | Paleozoic: |
| Kobayashi, T., 1933a: Faunal study of the Wanwanian (basal Ordovician) series with special notes on the Ribeiridae and the ellesmereoceroids. Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 3, pt. 7, pp. 249–328, pls. 1–10. (Reference No. 0080) |
 |
| Pojeta, J. Jr. and Runnegar, B., 1976: The paleontology of rostroconch mollusks and the early history of the phylum Mollusca. Geological Survey Professional Paper, no. 968, pp. i–iv + 1–88, pls. 1–54. (Reference No. 0609) |
| Ichikawa, T., 1988, no. 15, p. 134. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 71. |
