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.
There are three subphyla in the chordates-one, the vertebrates, will be covered next chapter. The other two have chordate features but no backbones: The sea squirts or tunicates (technically, urochordates) spend their adult live as sessile creatures, looking like a vase with two openings.here are three subphyla in the chordates-one, the vertebrates, will be covered next chapter. The other two have chordate features but no backbones: The sea squirts or tunicates (technically, urochordates) spend their adult live as sessile creatures, looking like a vase with two openings.