Adult tunicates have a pouch-like pharynx with slits, but they do not have a notochord, dorsal nerve cord, or postanal tail. These chordate characteristics are lost during metamorphosis. The phylum is named for the vertebrae. Skull - bones protecting the brain. Backbone - bones protecting the nerve cord and supporting the body.
Front limbs attach to the pectoral girdle and hind limbs attach to the pelvic girdle.
Of the 7 classes of vertebrates, three are fish. These marine fish maintain homeostasis between salt and water in the body through a process called osmoregulation . This assignment must be turned in by the beginning of class tomorrow to receive credit. Scoring criteria Give one example of an animal in the Phylum Chordata that is an invertebrate, not a vertebrate. You remember that hind limbs attach to the pelvic girdle.