Does Palo Duro Canyon Show Deep Time?


The Tar Tells Toothy Tales of Extinction

The La Brea tar pits in Los Angeles—actually seeps of smelly asphaltum—are loaded with fossils. New analyses of chemicals inside their ancient teeth give clues as to what they ate and maybe why some of them went extinct.

Collagen Decays Too Fast for Evolutionary Time


Where Did Faces Come From?


Radiocarbon in Yet Another Dinosaur Fossil

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