Koyseraspis ? euclids (Walcott)
| 1955. | Koyseraspis ? euclids (Walcott) Kobayashi, T. 1955a p. 442, pl. 4, fig. 8 |
| Condition: | Missing |
| Preservation: | Plaster cast: The original specimen in the Geological Survey of Canada, Ottawa |
| Taxonomy: | Arthropoda: |
| Geologic Time: | Paleozoic: |
| Kobayashi, T., 1955a: The Ordovician fossils from the McKay group in British Columbia, western Canada, with a note on the Early Ordovician palaeogeography. Journal of the Faculty of Science, University of Tokyo, Section 2, vol. 9, pt. 3, pp. 355–493, pls. 1–9. (Reference No. 0143) |
 |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 145. |
