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Pictures | Tue Jun 9, 2015 | 3:56pm EDT

Dinosaur fossils preserve apparent red blood cells, collagen

An ungual claw from an indeterminate theropod where the erythrocyte-like structures were found, is pictured in this undated handout photo provided by Laurent Mekul, June 9, 2015. REUTERS/Laurent Mekul/Handout via Reuters

An ungual claw from an indeterminate theropod where the erythrocyte-like structures were found, is pictured in this undated handout photo provided by Laurent Mekul, June 9, 2015. REUTERS/Laurent Mekul/Handout via Reuters

Tuesday, June 09, 2015
An ungual claw from an indeterminate theropod where the erythrocyte-like structures were found, is pictured in this undated handout photo provided by Laurent Mekul, June 9, 2015. REUTERS/Laurent Mekul/Handout via Reuters
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Sergio Bertazzo, a biomedical physical scientist at Imperial College in London, examines a fossil at Natural History Museum in London in this undated handout photo provided by Laurent Mekul, June 9, 2015. REUTERS/Laurent Mekul/Handout via Reuters

Sergio Bertazzo, a biomedical physical scientist at Imperial College in London, examines a fossil at Natural History Museum in London in this undated handout photo provided by Laurent Mekul, June 9, 2015. REUTERS/Laurent Mekul/Handout via Reuters

Tuesday, June 09, 2015
Sergio Bertazzo, a biomedical physical scientist at Imperial College in London, examines a fossil at Natural History Museum in London in this undated handout photo provided by Laurent Mekul, June 9, 2015. REUTERS/Laurent Mekul/Handout via Reuters
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Dinosaur fossils preserve apparent red blood cells,...

Dinosaur fossils preserve apparent red blood cells,... Share
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