Amynodontidae

thumb| Tooth paratype of Cadurcotherium nouleti – [[MHNT]] thumb|Zaisanamynodon protheroi

Amynodontidae ("defensive tooth") is a family of extinct perissodactyls related to true rhinoceroses. They are commonly portrayed as semiaquatic hippo-like rhinos but this description only fits members of the Metamynodontini; other groups of amynodonts like the cadurcodontines had more typical ungulate proportions and convergently evolved a tapir-like proboscis.