mammifères
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Martre | Concept | 2 | 0.0 |
| Maru | Objet | 17 | 11.0 |
| Mary | Objet | 30 | 6.0 |
| Masaï | Concept | 5 | 1.2 |
| Masham | Concept | 4 | 0.3 |
| Massif Central | Concept | 2 | 7.6 |
| Master Mcgrath | Objet | 3 | 0.4 |
| Mathis | Objet | 1 | 0.7 |
| Megaconus | Taxon | 8 | 0.6 |
| Megalibgwilia | Taxon | 17 | 0.8 |
| Megalocnus | Taxon | 12 | 1.7 |
| Megalonychidae | Taxon | 28 | 15.6 |
| Megasorex Gigas | Taxon | 22 | 0.5 |
| Megatheriidae | Taxon | 19 | 3.6 |
| Megatherium | Taxon | 44 | 47.7 |
| Megistotherium | Taxon | 21 | 4.1 |
| Mei Lan | Objet | 3 | 0.6 |
| Mei Sheng | Objet | 4 | 0.0 |
| Mei Xiang | Objet | 6 | 0.1 |
| Mellba | Objet | 2 | 0.9 |
| Meninatherium Telleri | Taxon | 3 | 0.2 |
| Meniscotherium | Taxon | 11 | 0.0 |
| Menoceras | Taxon | 16 | 0.2 |
| Menotyphla | Taxon | 1 | 0.7 |
| Meow | Objet | 11 | 0.2 |
| Mephitidae | Taxon | 89 | 7.5 |
| Mephitis | Taxon | 32 | 3.6 |
| Merakpa | Concept | 1 | 0.0 |
| Merriamoceros | Taxon | 6 | 0.0 |
| Merychyus | Taxon | 6 | 0.0 |
| Merycochoerus | Taxon | 9 | 0.1 |
| Merycodus | Taxon | 5 | 0.2 |
| Merycoidodon | Taxon | 13 | 0.3 |
| Merycoidodon Culbertsoni | Taxon | 2 | 0.6 |
| Merycoidodontidae | Taxon | 10 | 1.1 |
| Mesechinus | Taxon | 24 | 1.8 |
| Mesechinus Hughi | Taxon | 26 | 0.5 |
| Meshie | Objet | 1 | 0.0 |
| Mesocricetus | Taxon | 30 | 1.9 |
| Mesodma | Taxon | 9 | 0.0 |
| Mesodma Ambigua | Taxon | 1 | 0.0 |
| Mesonychia | Taxon | 31 | 9.2 |
| Mesonychidae | Taxon | 17 | 1.3 |
| Mesonyx | Taxon | 19 | 3.4 |
| Mesoreodon | Taxon | 7 | 0.0 |
| Messi | Objet | 6 | 5.4 |
| Metacheiromys | Taxon | 13 | 0.0 |
| Metatheria | Taxon | 34 | 10.8 |
| Metaxytherium | Taxon | 12 | 0.8 |
| Metaxytherium Albifontanum | Taxon | 1 | 0.0 |