| 1993. | Irus (Irus) sp. |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Veneridae: |
| Geologic Time: | Recent: |
| Hayami, I. and Kase, T., 1993: Submarine cave Bivalvia from the Ryukyu islands: systematics and evolutionary significance. The University Museum, The University of Tokyo, Bulletin, no. 35, pp. i–vi + 1–133. (Reference No. 0651) |
  |
| Ichikawa, T., 1995, no. 33, p. 26. |
