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Early birds had four wings, not two: studyWashington (AFP) March 14, 2013 Some primitive birds boasted four wings, before evolution led them to ditch their hind feathers in favor of webbed or scaly feet, scientists in China said on Thursday. Previous research had uncovered the existence of bird-like dinosaurs with hind limb feathers, but evidence has remained slim in birds, which are widely believed to have evolved from dinosaurs. And even though the latest discovery documents new evidence of feathered feet in early birds, the question remains whether the plumes were ... read more |
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