Notable sports deaths in 2016. A look at those athletes, coaches and sports personalities we lost in 2016. Keion Carpenter. Keion Carpenter, a former NFL player and Virginia Tech defensive back and special teams standout died Thursday, Dec. 29, 2016 in Miami, the school announced. He was 39 and the cause of death is unknown.
Members of the phylum Chordata are bilaterally symmetric, deuterostome coelomates, and the vertebrate chordates display segmentation. Hemichordata, which includes the acorn worms, has been presented as a fourth chordate subphylum, but it now is usually treated as a separate phylum. It, along with the phylum Echinodermata, which includes starfish, sea urchins, sea cucumbers and their kin, are the chordates' closest relatives.
PHYLUM CORDATA: Although not the largest phylum, Chordata contains the most familiar species, including mammals. All chordates have certain features in common. They have pharyngeal slits, which are openings that connect the inside of the throat to the outside of the neck.They have a notochord, which is a rod that supports a nerve cord, the bundle of nerve fibers that connects the brain with the muscles and organs.HYLUM CORDATA: Although not the largest phylum, Chordata contains the most familiar species, including mammals. All chordates have certain features in common. They have pharyngeal slits, which are openings that connect the inside of the throat to the outside of the neck.