Gigantoraptor ("Giant Thief") is currently the biggest oviraptorosaur discovered.

Wikipedia has a more detailed and comprehensive article on Gigantoraptor

Jurassic Park Franchise

The Gigantoraptor  was one of the animals seen in Jim Martin's storyboards for Jurassic World that did not appeared in the final film. It was seen as a hologram in the Innovation Center and as the physical animal in a scrapped attraction together with a crestless hadrosaur (most likely Edmontosaurus).

If the Gigantoraptor had made it to the final cut of the film, it would be the first oviraptorosaur in the films.
Jim Martin - Jurassic World Innovation Center


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