| Gryphaea(noun, fauna, eocene, extinction) |
| Guaduas Formation(expression, geohistory, formation, paleogene) |
| Habrosaurus(noun, fauna, extinction, paleocene) |
| Hainina(noun, fauna, extinction, paleocene) |
| Hallirhoidae(noun, fauna, eocene, extinction) |
| Hapalodectidae(noun, fauna, eocene, extinction) |
| Hapalorestes(noun, fauna, eocene, extinction) |
| Harpagolestes(noun, fauna, eocene, extinction) |
| Hell Creek Formation(expression, geohistory, formation, paleogene) |
| Henricosborniidae(noun, fauna, eocene, extinction) |
| Hercoglossidae(noun, fauna, extinction, oligocene) |
| Hoanghoniinae(noun, fauna, eocene, extinction) |
| Holosteus(noun, fauna, extinction, oligocene) |
| Honanodon(noun, fauna, eocene, extinction) |
| Horusornithidae(noun, fauna, eocene, extinction) |
| Hukoutherium(noun, fauna, eocene, extinction) |
| Hyaenodontidae(noun, fauna, eocene, extinction) |
| Hyopsodontidae(noun, fauna, eocene, extinction) |
| Hyporhina(noun, fauna, extinction, oligocene) |
| Hypsamasia(noun, fauna, eocene, extinction) |