Geologic period: Cretaceous
About this image:
Deinocheirus was a large ornithomimosaur theropod dinosaur that lived in what is now southern Mongolia in the late Cretaceous Period. Its huge forelimbs were discovered by researchers in the 1960s, and for more than three decades the rest of the animal's appearance was a matter of discussion and speculation.
Karen was fortunate to work with Dr Yuong Nam Lee of the Korean Institute of Geoscience and Mineral Resources, whose research has helped to identify the appearance and life of Deinocherius.
Deinocherius is thought to have had some feathery covering, and with Dr Lee's assistance Karen created two images showing possible feathering patterns.
Did you know?
Research by Dr Lee and his colleagues suggests that Deinocheirus would not have had a strong bite: The teeth and skull of Deinocheirus were likely evolved for cropping the soft understory plants along riversides. The anatomy of the lower jaw is shaped for a large tongue, which most likely would have assisted in the grasping and manipulating the food consumed by Deinocheirus.