News From the Field
Biologists follow 'fossilizable' clues to pinpoint when mammal, bird and dinosaur ancestors became athletes
December 22, 2016
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Biologists have established a "fossilizable" indicator of athleticism in the bones of extinct vertebrates. The study is the first to draw a link between red blood cells (RBCs) size and microscopic traces of blood vessels and bone cells inside the bone. They found that extinct mammal and bird relatives had smaller RBCs and were likely better athletes than earlier terrestrial vertebrates.Full StorySource
University of Utah
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