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Dinosaurs: Facts about the reptiles that roamed Earth more than 66 million years agoDinosaurs are the extinct relatives of birds that roamed the lands and seas of ancient Earth. They first appeared around 240 ...
The six-mile-wide asteroid punched a one-way ticket toward extinction for all non-avian dinosaurs. Some 66 million years ...
Paleontologists recently announced the discovery of a new species that may help explain the history of life on Earth.
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