| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Tintinnida | 1 | 16 | 0 |
| Tintinnopsis lacustris | 0 | 3 | 0 |
| Tokophrya actinostyla (Collin 1912) | 0 | 1 | 0 |
| Tokophryidae | 1 | 1 | 0 |
| Tortitaenia obscura | 0 | 4 | 0 |
| Tracheleuglypha dentata | 0 | 5 | 0 |
| Trachelomonas Ehrenberg 1835 | 0 | 21 | 0 |
| Trachelomonas abrupta | 0 | 1 | 0 |
| Trachelomonas granulosa Playfair 1915 | 0 | 6 | 0 |
| Trachelomonas hispida | 0 | 2 | 0 |
| Trachelomonas hystrix Teiling 1916 | 0 | 1 | 0 |
| Trachelomonas oblonga | 0 | 3 | 0 |
| Trachelomonas rugulosa | 0 | 3 | 0 |
| Trachelomonas verrucosa A. Stokes 1887 | 0 | 1 | 0 |
| Trachelomonas volvocina | 0 | 1 | 0 |
