| Necrosauridae(noun, fauna, eocene, extinction) |
| Neoplagiaulacidae(noun, fauna, eocene, extinction) |
| Numidotheriidae(noun, fauna, eocene, extinction) |
| Oldfieldthomasiidae(noun, fauna, eocene, extinction) |
| Palaeophiidae(noun, fauna, eocene, extinction) |
| Phenacodontidae(noun, fauna, eocene, extinction) |
| Plesiadapiformes(noun, fauna, eocene, extinction) |
| Priscagamidae(noun, fauna, eocene, extinction) |
| Pristichampsidae(noun, fauna, eocene, extinction) |
| Pteridospermatophyta(noun, fauna, eocene, extinction) |
| Ptilodontoidea(noun, fauna, eocene, extinction) |
| Sclerorhynchidae(noun, fauna, eocene, extinction) |
| Sophiornithidae(noun, fauna, eocene, extinction) |
| Tillodontia(noun, fauna, eocene, extinction) |
| Triisodontidae(noun, fauna, eocene, extinction) |
| Uintatheriidae(noun, fauna, eocene, extinction) |
| Viverravidae(noun, fauna, eocene, extinction) |
| Xenungulata(noun, fauna, eocene, extinction) |
| extant rupelian first appearance(noun, animal, geohistory, appearance) |
| oligocene first appearance(noun, creature, geohistory, eocene, rupelian) |