| Dyrosauridae(noun, fauna, eocene, extinction) |
| Echinopedinidae(noun, fauna, eocene, extinction) |
| Epihippus(noun, fauna, eocene, extinction) |
| Epoicotheriidae(noun, fauna, eocene, extinction) |
| Eucosmodontidae(noun, fauna, eocene, extinction) |
| Florentiamyidae(noun, fauna, eocene, extinction) |
| Formiciinae(noun, fauna, eocene, extinction) |
| Gobiomyidae(noun, fauna, eocene, extinction) |
| Hallirhoidae(noun, fauna, eocene, extinction) |
| Haplohippus(noun, fauna, eocene, extinction) |
| Hoanghoniinae(noun, fauna, eocene, extinction) |
| Horusornithidae(noun, fauna, eocene, extinction) |
| Hyopsodontidae(noun, fauna, eocene, extinction) |
| Lambdopsalidae(noun, fauna, eocene, extinction) |
| Macginitiea(noun, fauna, eocene, extinction) |
| Mesosuchia(noun, fauna, eocene, extinction) |
| Necrosauridae(noun, fauna, eocene, extinction) |
| Neoplagiaulacidae(noun, fauna, eocene, extinction) |
| Notharctidae(noun, fauna, eocene, extinction) |
| Notharctinae(noun, fauna, eocene, extinction) |