New insight into what happened to dinos' predecessors (Image 1)

University of Washington student paleontologist Christian Sidor excavates a fossil in Tanzania. [Image 1 of 5 related images. See Image 2.] More about this image In 2013, researchers at the University of Washington (UW) announced their ...This is an NSF Multimedia Gallery item.
Source: NSF Multimedia Gallery - Category: Science Source Type: video