| Limnenetes(noun, fauna, extinction, rupelian) |
| Linthia(noun, fauna, eocene, extinction) |
| Liotomus(noun, extinction, paleocene, genus) |
| Lutetian genus extinction(expression, extinction, genus, lutetian) |
| Luvaris necopinatus(noun, fauna, extinction, ypresian) |
| Machaeroides(noun, fauna, eocene, extinction) |
| Madtsoia(noun, fauna, eocene, extinction) |
| Mammalodontidae(noun, fauna, extinction, chattian) |
| Megacerops(noun, fauna, extinction, priabonian) |
| Mene oblonga(expression, fauna, extinction, rupelian) |
| Merycoides(noun, fauna, extinction, chattian) |
| Merycoidodon(noun, fauna, extinction, chattian) |
| Mesatirhinus(noun, fauna, extinction, lutetian) |
| Mesodma(noun, extinction, paleocene, genus) |
| Mesohippus(noun, fauna, extinction, rupelian) |
| Mesonychid(noun, fauna, extinction, rupelian) |
| Mesonychidae(noun, fauna, extinction, rupelian) |
| Mesonyx(noun, fauna, eocene, extinction) |
| Metanephrocerus(noun, fauna, extinction, priabonian) |
| Metarhinus(noun, fauna, eocene, extinction) |