Shale of Utah, dating to the Miaolingian, as well as the Kaili Biota in Guizhou, China, which also dates to the Miaolingian. See also Arthropod Cambrian explosion Chengjiang biota List of Chengjiang Biota species by phylum References External links Burgess Shale fossils Cambrian arthropods Burgess Shale animals Maotianshan shales fossils Paibian Cambrian genus extinctions Wheeler Shale Paleozoic life of the Northwest Territories