Metaspriggina Swimcycle

14 Nov 2016 00:14 4
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© Phlesch Bubble

A major fossil discovery in Canada sheds new light on the development of the earliest vertebrates, including the origin of jaws, the first time this feature has been seen so early in the fossil record
http://www.cam.ac.uk/research/news/new-fossil-find-pinpoints-the-origin-of-jaws-in-vertebrates

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