| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Pseudopotamilla cerasina (Grube, 1870) |
Mediterranean Sea | ||
| Pseudopotamilla laciniosa (Ehlers, 1905) |
Western Central Pacific | ||
| Pseudopotamilla reniformis (Müller, 1771) |
Gregarious fanworm | Arctic, Pacific Ocean, Western Central Atlantic and the Mediterranean |