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The Strange 540-Million-Year-Old Fossil Shaking Up Evolutionary History
A strange Cambrian fossil named Salterella may hold the key to understanding how early animals first built skeletons. As the season of skeletons approaches, it’s worth remembering that the real “age of skeletons” began hundreds of millions of years ago during the early Cambrian Period, roughly 538 to 506 million years in the past. During [...]
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