| Quetzalcoatlus(noun, geohistory, fauna, extinction) |
| Rhynchonella(noun, fauna, eocene, extinction) |
| Richardoestesia(noun, geohistory, fauna, extinction) |
| Rotularia(noun, fauna, eocene, extinction) |
| Rupelian extinction(expression, extinction, period, geochronology) |
| Santa Lucia Formation(expression, geohistory, formation, paleogene) |
| Sarkastodon(noun, fauna, eocene, extinction) |
| Selandian extinction(expression, extinction, period, geochronology) |
| Shiva crater(expression, geology, crater, paleogene) |
| Silverpit crater(expression, geology, crater, paleogene) |
| Squatirhina(noun, geohistory, fauna, extinction) |
| Stylina(noun, fauna, eocene, extinction) |
| Taeniodonta(noun, fauna, extinction, priabonian) |
| Taeniolabididae(noun, fauna, extinction, paleocene) |
| Taeniolabidoidea(noun, fauna, extinction, paleocene) |
| Thamnasteria(noun, fauna, eocene, extinction) |
| Thanetian extinction(expression, extinction, period, geochronology) |
| Theelia(noun, fauna, extinction, lutetian) |
| Tomistoma cairense(expression, fauna, extinction, lutetian) |
| Torosaurus(noun, geohistory, fauna, extinction) |