In a stunning recent achievement, scientists have managed to - TopicsExpress



          

In a stunning recent achievement, scientists have managed to obtain fragments of the protein collagen from a 68 million-year-old fossil of T. rex, and determined the amino acid sequence of these fragments. The analysis shows that T. rex is more closely related to living birds (chickens and ostriches) than to any other living vertebrates. The pattern confirms what scientists have long suspected: all the dinosaurs went extinct except for the one lineage that gave rise to birds. Increasingly, biologists recognize that birds are simply highly modified dinosaurs. Indeed, birds are often classified as dinosaurs.
Posted on: Thu, 31 Jul 2014 16:30:52 +0000

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