Ancient ancestor of spiders, lobsters identified from B.C.'s Burgess Shale fossil beds

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http://i.cbc.ca/1.3012494.1427476813!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_460/yawunik-kootenayi-artistic-reconstruction.jpg A newly identified marine creature found in a shale site on the Alberta-B.C. border lived more than 509 millions years ago, more than 250 million years before the first dinosaur walked the Earth.


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