| 1984. | Ataphrus (Ataphrus) yokoyamai Nagao Kase, T. 1984 p. 72, pl. 7, fig. 4a-c |
| Condition: | Present |
| Taxonomy: | Mollusca: Gastropoda: |
| Geologic Time: | Mesozoic: |
| Kase, T., 1984: Early Cretaceous marine and brackish-water Gastropoda from Japan., pp. 1–263, pls. 1–31. National Science Museum, Tokyo. (Reference No. 0529) |
| Ichikawa, T., 1988, no. 15, p. 26. |
