Coelophysis bauri is the earliest dinosaur known from a number of complete fossil skeletons. It was a lightly built dinosaur which measured up to 3 metres (9.8 ft) in length. The name Coelophysis means “hollow form” or “hollow process”, so named because of its hollow limb bones. Coelophysis had a furcula (wishbone), the earliest known example in a dinosaur. Coelophysis had large eyes and good eyesight.