Anthocerotophyta (Hornworts)
Class: Anthocerotopsida
Order: Anthocerotales
—No subordinate taxa
Order: Dendrocerotales
Family: Dendrocerotaceae
| Scientific Name | Author/s | Common Name | Last Record | Distribution | Status | Taxon Profile |
| Dendroceros exalatus | Steph. (1909) | - | 1869 or before | southern Brazil | Extinct | Access |
Order: Notothyladales
—No subordinate taxa
Order: Phymatocerotales
—No subordinate taxa
Class: Leiosporocerotopsida
Order: Leiosporocerotales
—No subordinate taxa
Statistics
| Conservation status | Number of taxa (in percentage) |
| Extinct | 1 (100%) |
| Missing | 0 |
| Extinct in the Wild | 0 |
| Possibly Extinct in the Wild | 0 |
| Globally Rediscovered | 0 |
| Rediscovered in the Wild | 0 |
| Reintroduced | 0 |
| Hypothetical | 0 |
| Invalid | 0 |
| Erroneously listed | 0 |
| Uncertain status | 0 |
| Total | 1 |