The Grand Canyon is a gigantic geological library, with rocky layers that tell much of the story of Earth’s history.
By far the largest ever found of its kind, the spiny fossil predator "would have made enough scampi to feed an army," one ...
A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs preserved in stunning detail. Reading time: Reading time 3 minutes A newly ...
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