| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Tmetonyx Stebbing 1906 | 1 | 0 | 0 |
| Tmetonyx cicada (Fabricius 1780) | 0 | 0 | 1 |
| Tomopteridae | 1 | 0 | 0 |
| Tomopteris Eschscholtz 1825 | 1 | 0 | 0 |
| Tomopteris (Johnstonella) helgolandica (Greeff 1879) | 0 | 0 | 1 |
| Tortula (Savikkolapiosammalet) | 1 | 0 | 0 |
| Tortula ruralis | 0 | 0 | 1 |
| Tosaia Takayanagi 1953 | 1 | 0 | 0 |
| Tosaia hanzawai Takayanagi 1953 | 0 | 0 | 1 |
| Tosaiidae | 0 | 0 | 0 |
| Tracheophyta | 0 | 0 | 0 |
| Trachymedusae Haeckel 1866 | 2 | 0 | 0 |
| Trachyrincus | 2 | 0 | 0 |
| Trachyrincus murrayi Günther 1887 | 0 | 0 | 1 |
| Trachyrincus scabrus (Rafinesque 1810) | 0 | 0 | 1 |
nimet breadcrumb-navigoinnissa
