| Oxytoma(noun, extinction, paleocene, genus) |
| Pachyaena(noun, eocene, extinction, genus) |
| Palaeoglaux(noun, eocene, extinction, genus) |
| Palaeolagus(noun, fauna, extinction, oligocene) |
| Palaeonictis(noun, eocene, extinction, genus) |
| Palaeotheriidae(noun, fauna, extinction, oligocene) |
| Palaeotherium(noun, eocene, extinction, genus) |
| Palimphyes(noun, fauna, extinction, oligocene) |
| Pantodonta(noun, fauna, extinction, priabonian) |
| Pantolestidae(noun, fauna, extinction, oligocene) |
| Paracathartes(noun, eocene, extinction, genus) |
| Paracryptodira(noun, eocene, extinction, genus) |
| Parapithecidae(noun, fauna, extinction, oligocene) |
| Parapithecoidea(noun, fauna, extinction, oligocene) |
| Parectypodus(noun, eocene, extinction, genus) |
| Parvitragulus(noun, fauna, extinction, priabonian) |
| Paschatherium(noun, eocene, extinction, genus) |
| Patriofelis(noun, eocene, extinction, genus) |
| Peltosaurus(noun, fauna, extinction, oligocene) |
| Pentacosmodon(noun, extinction, paleocene, genus) |