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.
Hemichordates, the phylum of bilateral animals most closely related to chordates, could reveal the evolutionary origins of chordate traits such as the nerve cord, notochord, gill slits and tail.
Deuterostomes like tunicates and urchins are amazing creatures that are classified together because they share aspects of their evolutionary pasts. In this lesson you'll identify these characteristics and see what makes this group of animals unique.hordates. As mentioned before, because of their similar embryonic development, chordates and echinoderms can be classified together. But unlike echinoderms, chordates do not become radially symmetric as adults, and they don't have endoskeletons or water vascular systems.