Pikaia

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11	PDF Document Add to Reading List Source URL: www.fredheeren.com - Date: 2013-03-29 15:44:58 Chordates Haikouella Pikaia Cambrian explosion Craniata Notochord Yunnanozoon Burgess Shale type fauna Stephen Jay Gould Biology Phanerozoic Taxonomy
12	PDF Document Add to Reading List Source URL: www.efor.fr Language: English - Date: 2010-08-16 09:59:09 Biology Lancelet Branchiostoma lanceolatum Cephalochordata Branchiostoma floridae Branchiostoma Pharyngeal slit Pikaia Tunicate Chordates Taxonomy Zoology
13	PDF Document Add to Reading List Source URL: creation.com Language: English - Date: 2009-02-25 19:54:25 Phanerozoic Pikaia Haikouichthys Myllokunmingia Lancelet Paleontology Vertebrate Notochord Fossil Chordates Biology Paleozoic