Molecular Analysis of Dinosaur Osteocytes Indicates Presence of Endogenous Molecules

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20 years ago, Mary Schweitzer discovered that she spotted the effects of what could only be described as a red blood cell in a slice of dinosaur bone. This seemed impossible, since organic remains weren’t supposed to be able to survive the fossilization process. Numerous tests indicated that the spherical structures were blood cells from a 67-million year old Tyrannosaurus rex.

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