| Patriofelis(noun, fauna, eocene, extinction) |
| Peltosaurus(noun, geohistory, extinction, oligocene) |
| Pentacrinites(noun, fauna, eocene, extinction) |
| Periptychidae(noun, fauna, extinction, paleocene) |
| Phymosoma(noun, fauna, eocene, extinction) |
| Piceoerpeton(noun, fauna, eocene, extinction) |
| Pilgrimella(noun, fauna, eocene, extinction) |
| Pliolophus(noun, fauna, eocene, extinction) |
| Poabromylus(noun, fauna, extinction, priabonian) |
| Proaracana(noun, fauna, eocene, extinction) |
| Prochetodon(noun, fauna, eocene, extinction) |
| Propalaeotherium(noun, fauna, eocene, extinction) |
| Proteopithecidae(noun, geohistory, extinction, oligocene) |
| Protitanotherium(noun, fauna, extinction, priabonian) |
| Pseudocrypturus(noun, fauna, eocene, extinction) |
| Pseudoprotoceras(noun, fauna, extinction, bartonian) |
| Ptilodontidae(noun, fauna, extinction, paleocene) |
| Pycnodontidae(noun, fauna, extinction, lutetian) |
| Pycnodus(noun, fauna, extinction, lutetian) |
| Pyrotheria(noun, geohistory, extinction, oligocene) |