Portlandia lischkei (Smith)
| 1957. | Portlandia lischkei (Smith) Makiyama, J. 1957 pl. 17, fig. 2 |
| 1925. | Yoldia lischkei Smith Yokoyama, M. 1925a p. 30, pl. 2, fig. 2 |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Yoldiidae: |
| Geologic Time: | Cenozoic: |
| Makiyama, J., 1957: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 1. Palaeontological Society of Japan, Special Papers, no. 3, pp. 1–4, pls. 1–24. (Reference No. 0367) |
| Yokoyama, M., 1925a: Molluscan remains from the uppermost part of the Jo-ban coal-field. Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 5, pp. 1–34, pls. 1–6. (Reference No. 0473) |
  |
| Ichikawa, T., 1983, no. 9, p. 43. |
| Ichikawa, T., 1983, no. 9, p. 306. |
