| Crustulus Temporal range:   | |
|---|---|
|  Scientific classification   | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Chordata | 
| Class: | Mammalia | 
| Order: | † Pantodonta | 
| Genus: | † Crustulus  Clemens, 2017  | 
| Species: | †C. fontanus  | 
| Binomial name | |
| †Crustulus fontanus Clemens, 2017  | |
Crustulus is an extinct genus of pantodont that lived in what is now Montana during the Early Palaeocene. It is known from a single species, Crustulus fontanus. [1]
Crustulus has been noted as having very similar dentistry to Alcidedorbignya. [2]
Crustulus fontanus is one of the smallest known paleodonts. [3]