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Date: 2006-06-05 13:52:22Prehistoric life Geology Ediacara biota Cambrian explosion Nimbia Dickinsonia Charnia Swartpuntia Aspidella Geologic time scale Ediacaran biota Paleontology | Add to Reading ListSource URL: geol.queensu.caDownload Document from Source WebsiteFile Size: 909,57 KBShare Document on Facebook |