| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Valencinia longirostris Quatrefages | 0 | 0 | 0 |
| Valencinia Quatrefages | 0 | 0 | 0 |
| Valenciniidae | 0 | 0 | 0 |
| Zygeupolia | 0 | 1 | 0 |
| Zygeupolia rubens | 0 | 2 | 0 |
| Zygonemertes | 0 | 7 | 0 |
| Zygonemertes albida Coe 1901 | 0 | 7 | 0 |
| Zygonemertes thalassina Coe 1901 | 0 | 14 | 0 |
