+Chordates are a vast animal group characterized by a [Notochord](/wiki/notochord) and a dorsal hollow nerve cord at some point in their life. This phylum includes all [Vertebrates](/wiki/vertebrate), which possess a backbone, alongside simpler creatures like tunicates.
+## See also
+- [Animal](/wiki/animal)
+- [Phylum](/wiki/phylum)
+- [Invertebrates](/wiki/invertebrate)
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