chordates
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Chordates are a group of animals that possess a dorsal nerve cord, a notochord, pharyngeal slits, and a post- tail at some stage in their development. This group includes most animals that we commonly think of as vertebrates, such as fish, reptiles, birds, and mammals. However, there are also some non-vertebrate chordates, such as lancelets and tunicates. Chordates are known for their well-developed nervous system, which enables them to respond to and interact with their environment in complex ways.
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