| Metatelmatherium(noun, fauna, extinction, priabonian) |
| Metopaster(noun, fauna, eocene, extinction) |
| Microcosmodon(noun, extinction, paleocene, genus) |
| Mimetodon(noun, extinction, paleocene, genus) |
| Mongolestes(noun, fauna, extinction, rupelian) |
| Neoliotomus(noun, extinction, paleocene, genus) |
| Neoplagiaulacidae(noun, fauna, extinction, rupelian) |
| Neoplagiaulax(noun, extinction, paleocene, genus) |
| Nimravus(noun, fauna, extinction, chattian) |
| Notohippidae(noun, fauna, extinction, chattian) |
| Notostylopidae(noun, fauna, extinction, rupelian) |
| Oligopithecidae(noun, fauna, extinction, rupelian) |
| Orohippus(noun, fauna, eocene, extinction) |
| Otarocyon(noun, fauna, extinction, chattian) |
| Oxyaena(noun, fauna, eocene, extinction) |
| Oxytoma(noun, extinction, paleocene, genus) |
| Pachyaena(noun, fauna, eocene, extinction) |
| Palaeobalistum(noun, fauna, extinction, ypresian) |
| Palaeocarpilius(noun, fauna, extinction, rupelian) |
| Palaeoglaux(noun, fauna, eocene, extinction) |