Reconstructions show how some of the earliest animals lived—and died (w/ Video)

A bizarre group of uniquely shaped organisms known as rangeomorphs may have been some of the earliest animals to appear on Earth, uniquely suited to ocean conditions 575 million years ago. A new model devised by researchers at the University of Cambridge has resolved many of the mysteries around the structure, evolution and extinction of these 'proto animals.' The findings are reported today in the journal PNAS.

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