| Juliidae(noun, creature, geohistory, eocene) |
| Jumping spider(expression, creature, geohistory, eocene) |
| Kentriodontidae(noun, creature, geohistory, oligocene) |
| Kitefin shark(expression, creature, geohistory, eocene) |
| Lanternfish(noun, creature, geohistory, eocene) |
| Lari(noun, creature, geohistory, eocene) |
| Lates(noun, creature, geohistory, eocene) |
| Lazarussuchus(noun, creature, geohistory, paleocene) |
| Leiognathidae(noun, creature, geohistory, eocene) |
| Lepidopleurus(noun, creature, geohistory, paleocene) |
| Leptictidium(noun, creature, geohistory, ypresian) |
| Litopterna(noun, creature, geohistory, paleocene) |
| Mammacyon(noun, creature, geohistory, oligocene) |
| Megachilid bee(expression, creature, geohistory, eocene) |
| Megachilidae(noun, creature, geohistory, eocene) |
| Mekosuchinae(noun, creature, geohistory, ypresian) |
| Melittidae(noun, creature, geohistory, eocene) |
| Merycochoerus(noun, creature, geohistory, oligocene) |
| Mesonychid(noun, creature, geohistory, paleocene) |
| Mesonychidae(noun, creature, geohistory, paleocene) |