News From the Field Protein Fragments Sequenced in 68 million-year-old Tyrannosaurus Rex
April 12, 2007
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In a venture once thought to lie outside the reach of science, researchers from Harvard Medical School and Beth Israel Deaconess Medical Center have captured and sequenced tiny pieces of collagen protein from a 68 million-year-old T. rex. The protein fragments--seven in all--appear to most closely match amino acid sequences found in collagen of present day chickens, lending support to a recent and still controversial proposal that birds and dinosaurs are evolutionarily related.
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Source Harvard Medical School
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