What are the similarities between chordates and non-chordates?

Answer:
most chordates are vertebrates, but some are not. invertebrate chordates belong to two of the subphylum of chordates. Cephalochordata and Urochordata. both invertebrate and vertebrate chordata have a dorsal nerve cord, a notochord, pharyngeal pouches and a postanal tail.
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