For more on the tyrannosaur family, see Rise of the Tyrannosaurs.
Credit: Illustration by Todd Marshall (dinosaurs), Graphics by 5W Infographics; SOURCE: PLATE TECTONIC AND PALEOGEOGRAPHIC MAPS BY C. R. SCOTESE, PALEOMAP PROJECT, 2009 (maps)
All in the Family
A rash of fossil discoveries in recent years has filled in the tyrannosaur family tree. The finds show that tyrannosaurs were a surprisingly diverse bunch yet slow to evolve the gigantic proportions associated with mighty T.Rex
This article was originally published with the title "All in the Family"