| Schizaster(noun, creature, geohistory, paleocene) |
| Sea butterfly(expression, creature, geohistory, paleocene) |
| Slender-snouted crocodile(expression, creature, geohistory, paleocene) |
| Squalodon(noun, creature, geohistory, rupelian) |
| Squalodontidae(noun, creature, geohistory, chattian) |
| Strisores(noun, creature, geohistory, paleocene) |
| Struthionidae(noun, creature, geohistory, paleocene) |
| Sulidae(noun, creature, geohistory, paleocene) |
| Syndyocera(noun, creature, geohistory, chattian) |
| Tarsiiformes(noun, creature, geohistory, paleocene) |
| Thylacinidae(noun, creature, geohistory, chattian) |
| Thylacinus macknessi(expression, creature, geohistory, chattian) |
| Thylacoleonidae(noun, creature, geohistory, chattian) |
| Toxodontidae(noun, creature, geohistory, chattian) |
| Triakis(noun, creature, geohistory, paleocene) |
| Tsaganomyidae(noun, creature, geohistory, rupelian) |
| Ungulate(noun, creature, geohistory, paleocene) |
| Vombatiformes(noun, creature, geohistory, chattian) |
| Whale shark(expression, creature, geohistory, paleocene) |
| Xenarthra(noun, creature, geohistory, paleocene) |