Claim: First named by Gerardo De Iuliis, Timothy J. Gaudin and Matthew J. Vicars in 2001, Mionothropus is a genus of nothrotheriine nothrotheriid sloth that currently exists in Peru where its generic name was derived from "Mio", a reference to the Miocene provenance of the holotype, and "nothropus" refers to the initial allocation of the holotype to this genus from the South American Pleistocene.
Evidence: Mionothropus is an extinct genus of nothrotheriine nothrotheriid sloth which existed in Peru in the western Amazon Basin, during the late Miocene (Huayquerian age).