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6:10pm, February 16, 2011
CTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ""> When life got complicated
What look like fossilized seaweeds plus other whatzits from the Lantian rock formation in southern China suggest that life may have started getting fancy earlier than researchers had thought. Before a new analysis, paleontologists often cited fossil sea species from what’s called the Avalon biota, dating back 579 million to 565 million years, as the earliest known array of complex, multicellular life forms. Lantian fossils, however, take five general forms and date from between about 580 million and 635 million y
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