Osborn, H. F. 1905. Tyrannosaurus and other Cretaceous carnivorous dinosaurs. Bulletin of the American Museum of Natural History, 21: 259–265.
2
Milner, A. R., Harris, J. D., Lockley, M. G., Kirkland, J. I. & Matthews, N. A. 2009. Bird-like anatomy, posture, and behaviour revealed by an Early Jurassic theropod dinosaur resting trace. PLOS ONE, 4: e4591.
