| Trích dẫn | Harbo, R.M., 1997 Shells and shellfish of the Pacific Northwest, a field guide. Harbour Publishing, Canada, 270p. |
| Tài liệu tham khảo | 95344 Harbo, R.M., 1997 |
| Trang | 87 |
| Named Used as Valid | Velutina prolongata |
| Địa phương | |
| Distribution | Northeast Pacific. |