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The oldest fossil of its kind reveals the origin of legs

The oldest fossil of its kind reveals the origin of legs

Business Insider - Martin R. Smith

With no mineralised hard parts, worms like this would normally rot and decay long before the processes of fossilisation could get to work. But this exceptional one-off preserves every wart and wrinkle of the animal's skin, along with the fibrous tissues of its muscles. The great age of the fossil …

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