Phil. Trans. R. Soc. B[removed], 1557–1568 doi:[removed]rstb[removed]Published online 11 January 2008

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Date: 2012-08-23 07:58:15 Phyla Chordates Deuterostomia Developmental biology Vetulicolia Deuterostome Pharyngeal slit Hemichordata Maotianshan Shales Taxonomy Zoology Biology		Phil. Trans. R. Soc. B[removed], 1557–1568 doi:[removed]rstb[removed]Published online 11 January 2008 Add to Reading List Source URL: www.nhm.ac.uk Download Document from Source Website File Size: 497,07 KB Share Document on Facebook

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