| Country | Year | Collector | Identifier | Catalog No. | Depth (m) | Locality | Source |
| United States (contiguous states) | no year | Santa Barbara, California | SLB | ||||
| United States (contiguous states) | no year | Neah Bay, Washington | SLB | ||||
| United States (contiguous states) | no year | Makah Bay, Washington | SLB | ||||
| United States (contiguous states) | no year | San Simeon Beach (north of Cambria), California | SLB |
