Yale research has identified the oldest-known, definitive members of an evolutionary group that includes all living lizards and their closest extinct relatives.
Pair of lizard kings from old, old West miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.
The dinosaur fossil found in Mississippi that looks like an ostrich and is about as tall as a giraffe is helping scientists fill in the information gaps.
Researchers have recently been able to identify large-bodied specimens of the ornithomimosaur, which may have been the world's fastest dinosaur at the time.