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News Release 07-038

Ancient T. rex and Mastodon Protein Fragments Discovered, Sequenced

68-million-year-old T. rex proteins are oldest ever sequenced

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Ancient proteins have been found in bones like those of a 69-million-year-old T. rex fossil.

Ancient proteins have been found in bones like those of a 68-million-year-old dinosaur T. rex fossil.

Credit: Zina Deretsky, National Science Foundation


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