| Philotrox(noun, fauna, extinction, chattian) |
| Phosphatherium(noun, fauna, extinction, ypresian) |
| Plesiadapis(noun, fauna, extinction, ypresian) |
| Pleuraspidotherium(noun, extinction, paleocene, genus) |
| Prionessus(noun, extinction, paleocene, genus) |
| Priscocamelus(noun, fauna, extinction, chattian) |
| Proborhyaenida(noun, fauna, extinction, chattian) |
| Prodinoceras(noun, extinction, paleocene, genus) |
| Psittacotherium(noun, extinction, paleocene, genus) |
| Purgatorius(noun, extinction, paleocene, genus) |
| Pycnodontidae(noun, fauna, extinction, lutetian) |
| Pycnodus(noun, fauna, extinction, lutetian) |
| Schochia(noun, extinction, paleocene, genus) |
| Sinonyx(noun, extinction, paleocene, genus) |
| Sphenopsalis(noun, extinction, paleocene, genus) |
| Stauranderaster(noun, extinction, paleocene, genus) |
| Stygimys(noun, extinction, paleocene, genus) |
| Subhyracodon(noun, fauna, extinction, chattian) |
| Sunkahetanka(noun, fauna, extinction, chattian) |
| Taeniolabis(noun, extinction, paleocene, genus) |