| Honanodon(noun, eocene, extinction, genus) |
| Hukoutherium(noun, eocene, extinction, genus) |
| Hypsamasia(noun, eocene, extinction, genus) |
| Idrissia(noun, eocene, extinction, genus) |
| Kogaionidae(noun, fauna, extinction, paleocene) |
| Lammidhania(noun, eocene, extinction, genus) |
| Leptictidium(noun, fauna, extinction, priabonian) |
| Leptoreodon(noun, fauna, extinction, priabonian) |
| Leptotragulus(noun, fauna, extinction, priabonian) |
| Linthia(noun, eocene, extinction, genus) |
| Lithornis(noun, fauna, extinction, bartonian) |
| Lithornithidae(noun, fauna, extinction, bartonian) |
| Machaeroides(noun, eocene, extinction, genus) |
| Madtsoia(noun, eocene, extinction, genus) |
| Megacerops(noun, fauna, extinction, priabonian) |
| Mesonyx(noun, eocene, extinction, genus) |
| Metanephrocerus(noun, fauna, extinction, priabonian) |
| Metarhinus(noun, eocene, extinction, genus) |
| Metatelmatherium(noun, fauna, extinction, priabonian) |
| Metopaster(noun, eocene, extinction, genus) |