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T. Rex's Family Tree

A comparison of T. rex bone proteins and similar proteins from a variety of living animals has helped clarify the dinosaur's place on the evolutionary tree, showing that the 7-ton carnivore is more closely related to modern birds than lizards.


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T. Rex Closer to Gizzards Than Lizards
Article | Protein retrieved from a 68 millon-year-old Tyrannosaurus rex bone closely resembles the main protein in chicken and ostrich bones and is only distantly related to lizards', strengthening the popular idea that birds, and not reptiles, are the closest living relatives of dinosaurs.

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