| Gryphaea(noun, eocene, extinction, genus) |
| Habrosaurus(noun, extinction, paleocene, genus) |
| Hainina(noun, extinction, paleocene, genus) |
| Hapalorestes(noun, eocene, extinction, genus) |
| Haplohippus(noun, eocene, extinction, genus) |
| Harpagolestes(noun, eocene, extinction, genus) |
| Heteromeryx(noun, fauna, extinction, priabonian) |
| Holcorpa(noun, fauna, extinction, priabonian) |
| Honanodon(noun, eocene, extinction, genus) |
| Hukoutherium(noun, eocene, extinction, genus) |
| Hyposaurus(noun, extinction, paleocene, genus) |
| Hypsamasia(noun, eocene, extinction, genus) |
| Idrissia(noun, eocene, extinction, genus) |
| Isocrania(noun, extinction, paleocene, genus) |
| Jiangxia(noun, extinction, paleocene, genus) |
| Kankatodus(noun, extinction, paleocene, genus) |
| Kimbetohia(noun, extinction, paleocene, genus) |
| Kingena(noun, extinction, paleocene, genus) |
| Krauseia(noun, extinction, paleocene, genus) |
| Lambdopsalis(noun, extinction, paleocene, genus) |