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
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Credit: Illustration by Todd Marshall (dinosaurs), Graphics by 5W Infographics; SOURCE: PLATE TECTONIC AND PALEOGEOGRAPHIC MAPS BY C. R. SCOTESE, PALEOMAP PROJECT, 2009 (maps)
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