| Terebellidae Johnston, 1846 |
| Terebellobranchia Day, 1951 |
| Terebellobranchia gorgonae (Monro, 1933) |
| Terebellobranchia mchughae Londoño-Mesa, 2003 |
| Thelepus Leuckart, 1849 |
| Thelepus cincinatus (Fabricius, 1780) |
| Thelepus comatus (Grube & Kröyer, 1859) |
| Thelepus fraggleorum Capa & Hutchings, 2006 |
| Thelepus haitiensis Treadwell, 1931 |
| Thelepus robustus (Grube, 1878) |
| Thelepus setosus (de Quatrefages, 1866) |
| Torquea Leidy, 1855 |
| Torquea eximia Leidy, 1855 |