Tyrannosaurid skeletal design first evolved at small body size

P. C. Sereno, L. Tan, S. L. Brusatte, H. J. Kriegstein, X. Zhao, and K. Cloward

2009

Article

Science

Find it at:

http://dx.doi.org/10.1126/science.1177428

Taxa discussed in this work:

• Raptorex
• Raptorex kriegsteini

Taxonomy:

• Raptorex kriegsteini belongs to Raptorex - Sereno et al. (2009)