| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Thysanozoon brocchii (Risso, 1818) |
Carpet flatworm | Southeast Atlantic | |
| Thysanozoon nigropapillosum (Hyman, 1959) |
Indo-West Pacific | ||
| Thysanozoon nigrum unspecified |
Warty flatworm | Western Central Atlantic | |
| Thysanozoon sandiegense Hyman, 1953 |
Northeast Pacific | 3 |