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Date: 2011-09-08 05:55:01Burgess Shale fossils Xenusia Lagerstätten Anomalocaridid Lobopodia Arthropod head problem Microdictyon Maotianshan Shales Arthropod Paleozoic Phanerozoic Geologic time scale | Add to Reading ListSource URL: www.paleo.pan.plDownload Document from Source WebsiteFile Size: 715,37 KBShare Document on Facebook |