Phylum Chordata Subphyla Invertebrata & Vertebrata from sea otters to sea squirts.
Evolution and Classification of Fishes Morphology of the Bony Fish.
Phylum Chordata At some point during a chordates life, all chordates will have a nerve cord, a notochord, and a throat with gill slits.
Biodiversity of Fishes Phylogeny and Remarkable Fishes Rainer Froese [email protected] (13.11.14)
