75-million-year-old dinosaur blood and collagen discovered in fossil fragments

Scientists have discovered what appear to be red blood cells and collagen fibres in the fossilised remains of dinosaurs that lived 75 million years ago. Traces of the soft tissues were found by accident when researchers at Imperial College in London analysed eight rather shabby fossils that had been dug up in Canada a century ago before finding their way to the Natural History Museum in London.
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