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Trilobites Found With Mysterious Mark  Perhaps the best-known group of ancient animals after dinosaurs, trilobites s...
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New DNA analysis puts date of human m  Our ancestors migrated out of Africa more recently than thought, leaving the ...
Crow-Size Pterosaur Named After 9-Yea  Illustration of the new species of pterosaur A new species of crow-size pt...
Mega-eruptions Caused Mass Extinction  Along sea cliffs in southern England, geologist Paul Olsen of Columbia Univ...
Mega Volcanoes May Have Caused Mass E  Mega Volcanoes May Have Caused Mass Extinction Massive volcanic eruptions ...
Inbreeding Common in Early Humans Human skull fossils (inset) found at the Xujiayao site in China (background...
《National Geographic》Behind the Cov  《National Geographic》Behind the Cover:April 2013 Meet the Extinct Animal...
Birds May Have Flown Like Four-Winged  The fossilized ancient bird Confuciusornis and a close-up of its leg feathe...

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