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Date: 2014-11-23 20:30:02Evolutionary biology Earth sciences Geological periods Ediacaran biota Cambrian explosion Evolution Fossil Paleontology Small shelly fauna Cambrian Precambrian Doushantuo Formation | Fossil Focus: ChelicerataAdd to Reading ListSource URL: pdf.palaeontologyonline.comDownload Document from Source WebsiteFile Size: 889,71 KBShare Document on Facebook |