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At A Site In Northeastern Brazil, Prehistoric Rock Art And 140 Million-Year-Old Dinosaur Footprints Are Brought Together "Like No Archaeological Or Paleontologi…
At a site in northeastern Brazil, there is prehistoric rock art, and footprints made long ... while the long-necked sauropods ...
Researchers study the role of rock strength in landscape evolution
At first glance, landscapes like the Great Plains and the Rockies may seem unchanging, but over geological time scales, ...