| Referens | Springsteen, F.J. and F.M. Leobrera, 1986 Shells of the Philippines. Carfel Seashell Museum. Metro Manila, Philippines. 377 p. |
| Ref. | 821 Springsteen, F.J. and F.M. Leobrera, 1986 |
| Sida | 282 |
| Named Used as Valid | Clavus opalus |
| Observationsplats | |
| Distribution | Philippines. |