| A (0 species) |
| B (0 species) |
| C (0 species) |
| D (1 species) |
| Dearcmhara - Jurassic, 183.0-168.4 Ma[1] |
| E (0 species) |
| F (0 species) |
| G (0 species) |
| H (2 species) |
| Hauffiopteryx - Early Jurassic, 182.7-181.8 Ma |
| Hudsonelpidia - Late Triassic, 210 Ma |
| I (0 species) |
| J (0 species) |
| K (0 species) |
| L (0 species) |
| M (0 species) |
| N (0 species) |
| O (0 species) |
| P (0 species) |
| Q (0 species) |
| R (0 species) |
| S (0 species) |
| T (0 species) |
| U (0 species) |
| V (0 species) |
| W (0 species) |
| X (0 species) |
| Y (0 species) |
| Z (0 species) |