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This Concept Map, created with IHMC CmapTools, has information related to: Characteristics Phylum Chordata, pharyngeal slits connect pharynx, Phylum Chordata has or present at certain stage of their life has pharyngeal slits, Phylum Chordata has or present at certain stage of their life has post anal-tail, Phylum Chordata has or present at certain stage of their life has notochord, pharyngeal slits connect esophagus, Phylum Chordata has or present at certain stage of their life has close circulatory system, notochord which give rise to vertebral column, Phylum Chordata has or present at certain stage of their life has myotomes, post anal-tail which extend beyond anus, pharynx and esophagus, dorsal nerve cord is hollow, Phylum Chordata has or present at certain stage of their life has dorsal nerve cord