Is this a fossilized red blood cell?
Is this a fossilized red blood cell at 2,100X?
It was displayed at:
http://www.wretch.cc/album/show.php?i=lin440315&b=15&f=1126412183&p=50
It is the one right at the center. It measures about 8 millimeters
across. It is located in a specimen of a femur fossil found in
Pennsylvania.
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