| Lacertidae(noun, creature, geohistory, chattian) |
| Latonia(noun, creature, geohistory, chattian) |
| Leptocyon(noun, creature, geohistory, rupelian) |
| Macropodidae(noun, creature, geohistory, chattian) |
| Macropodiformes(noun, creature, geohistory, chattian) |
| Maximucinus muirheadae(expression, creature, geohistory, rupelian) |
| Megabat(noun, creature, geogistory, oligocene) |
| Megalonychidae(noun, creature, geohistory, rupelian) |
| Megatheriidae(noun, creature, geohistory, rupelian) |
| Mercenaria(noun, creature, geogistory, oligocene) |
| Merycoides(noun, creature, geohistory, rupelian) |
| Mesocyon(noun, creature, geohistory, rupelian) |
| Metacarcinus(noun, creature, geogistory, oligocene) |
| Mongoose(noun, creature, geogistory, oligocene) |
| Muscicapoidea(noun, creature, geogistory, oligocene) |
| Musophagidae(noun, creature, geohistory, chattian) |
| Myobatrachidae(noun, creature, geohistory, chattian) |
| Myophiomyidae(noun, creature, geohistory, rupelian) |
| Narcissus(noun, creature, geohistory, chattian) |
| Nephrops(noun, creature, geogistory, oligocene) |