- A study throws new light on dinosaur walking and running speed, and how animals distributed that force. By modelling how a of ground-dwelling birds, ranging from quail to ostriches ran scientists have reconstructed how theropod dinosaurs such as Tyrannosaurus, Velociraptor and Australovenator moved. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0192172 15 comments science