What defines the Phylum Chordata that includes the Wahoo?

Answer

Presence of a notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail

The Phylum Chordata is characterized by the presence of specific structural features at some stage of development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. While these features may look different in adult fish compared to other chordates like birds or mammals, they remain the underlying defining structures for the phylum.

What defines the Phylum Chordata that includes the Wahoo?
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