Crustulus

{{Short description|Extinct genus of mammals}}

{{Speciesbox

| fossil_range = {{Geological age|Early Palaeocene}}

| genus = Crustulus

| parent_authority = Clemens, 2017

| species = fontanus

| authority = 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.{{Cite journal |last=Clemens |first=William A. |date=17 February 2018 |title=A pantodont (Mammalia) from the latest Puercan North American Land Mammal Age (earliest Paleocene) of the Western Interior, USA |url=https://www.tandfonline.com/doi/full/10.1080/08912963.2016.1276178 |journal=Historical Biology |language=en |volume=30 |issue=1-2 |pages=183–188 |doi=10.1080/08912963.2016.1276178 |issn=0891-2963 |access-date=25 September 2024 |via=Taylor and Francis Online|url-access=subscription }}