| Citation | Cutler, E.B., 1994 The Sipuncula. Their systematics, biology and evolution. Ithaca: Comstock publishing Associates, 433 p. |
| Ref. | 1840 Cutler, E.B., 1994 |
| Page | 92 |
| Named Used as Valid | Nephasoma constricticervix |
| Locality | |
| Distribution | Both sides of the northern Atalntic at 12000 to 5500 m and south to 22°South on the eastern side. |