| Phoberomys(noun, geohistory, unit, argentina) |
| Phoberomys insolita(expression, geohistory, unit, argentina) |
| Phorusrhacos(noun, geohistory, unit, argentina) |
| Platygonus(noun, geohistory, unit, argentina) |
| Plesiocetus(noun, geohistory, unit, argentina) |
| Prepotherium(noun, geohistory, unit, argentina) |
| Procariama(noun, geohistory, unit, argentina) |
| Promegatherium(noun, geohistory, unit, argentina) |
| Pronothrotherium(noun, geohistory, unit, argentina) |
| Prosqualodon(noun, geohistory, unit, argentina) |
| Protamandua(noun, geohistory, unit, argentina) |
| Protautoga(noun, geohistory, unit, argentina) |
| Prothylacinus(noun, geohistory, unit, argentina) |
| Protypotherium(noun, geohistory, unit, argentina) |
| Psilopterus(noun, geohistory, unit, argentina) |
| Ribodon(noun, geohistory, unit, argentina) |
| Scalabrinitherium(noun, geohistory, unit, argentina) |
| Stegotherium(noun, geohistory, unit, argentina) |
| Theosodon(noun, geohistory, unit, argentina) |
| Thoatherium(noun, geohistory, unit, argentina) |