79
Currie 1998. Possible evidence of gregarious behaviour.
80
Schmitz, L. & Motani, R. 2011. Nocturnality in dinosaurs inferred from scleral ring and orbit morphology. Science, 332:705–708.
81
Brusatte, S. L., Norell, M. A., Carr, T. D., Erickson, G. M., Hutchinson, J. R., Balanoff, A. M., Bever, G. S., Choiniere, J. N., Makovicky, P. J. & Xu, X. 2010. Tyrannosaur paleobiology: new research on ancient exemplar organisms. Science, 329: 1481–1485.