| Citation | Cutler, E.B., 1994 The Sipuncula. Their systematics, biology and evolution. Ithaca: Comstock publishing Associates, 433 p. |
| ссылка | 1840 Cutler, E.B., 1994 |
| Page | 35 - 36 |
| Named Used as Valid | Sipunculus marcusi |
| Местонахождение | |
| Distribution | São Paulo, Brazil. |