Gigantoraptor, discovered in 2005 in Mongolia, is a gigantic bird-like theropod that lived 70-million years ago, during the Cretaceous period.
It’s in the family Oviraptoridae, along with, obviously, Oviraptor, but Gigantoraptor is three times as long and 35 times more massive than the second-largest Oviraptorid, Citipati. Perhaps reaching up to 26 feet in length and 1,400 kg in weight.
Photo credits: Wikipedia, Wired