Like T. rex and some modern sloths, this strange 90 million year old dinosaur had two fingers on each hand. An illustration shows what Duonychus tsogtbaatari might have looked like. Unlike its ...

Lesothosaurus diagnosticus was one of the most primitive and earliest ornithischians, or "bird-hipped" dinosaurs. Ornithischians were one of the two major groups of dinosaurs and included such ...