What is "peligrotherium"

Peligrotherium is an extinct dryolestoid from the Paleocene of Patagonia, originally interpreted as a stem- ungulate (though it did co-exist with early meridiungulates). Its remains have been found the Salamanca Formation. It was a dog-sized mammal, among the largest of all dryolestoids, and closely related to mesungulatids, another lineage of large sized herbivorous dryolestoids.