It was thought to have gone extinct 11 million years ago — a chipmunk-sized, brush-tailed rodent with a long head and quick paws well-suited for scooting across the rock escarpments of ancient China and Pakistan.More details over at Seattle Times.
Then last year in central Laos, western scientists spotted an unusual animal carcass in a meat market near the Mekong River. So unusual, in fact, that it turned out to represent a new rodent family — the first new mammal family to be announced in 30 years. The researchers called it Laonastes aenigmamus, the Laotian "rock rat." Local people call it "kha-nyou."
Scientists discover mammal that was assumed to be extinct 11 million years ago

A Laotian rodent was rediscovered in Southeast Asia. This mammal was believed to have gone extinct 11 million years ago.