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" in Scientific American 312, 5, (May 2015)
