Chordata:
Any of a phylum (Chordata) of animals having at least at some stage of development a notochord, dorsally situated central nervous system, and gill clefts and including the vertebrates, lancelets, and tunicates.
Any of a phylum (Chordata) of animals having at least at some stage of development a notochord, dorsally situated central nervous system, and gill clefts and including the vertebrates, lancelets, and tunicates.
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