Craniate with well-defined heads, thus excluding members of the chordate subphyla Tunicata (tunicates) and Cephalochordata (lancelets), but including Myxini, which have cartilaginous skulls and tooth-like structures composed of keratin. Craniata also includes all lampreys and armoured jawless fishes, armoured fish, sharks, skates, and rays, and teleostomians: spiny sharks, bony fish, lissamphibians, temnospondyls and protoreptiles, sauropsids and mammals. The craniate head consists of a brain, sense organs, including eyes, and a skull. In addition to distinct crania (sing. "cranium"), craniates possess many derived characteristics, which have allowed for more complexity to follow. Molecular-genetic analysis of craniates reveals that, compared to less complex
Feed the Animals end of the album would get so neglected, and if your favorite moment was a 30-second bit at the 40-minute mark, it would be really annoying to have that." On June 19, 2008, "Feed the Animals" was made available for download by Girl Talk's record label, Illegal Art, sells "Feed the Animals" using a "pay what you want" system for non-seamless MP3 files. Gillis explained that the goal behind the special payment system was to "make it easier for people to get their hands on the music", which he described as his "number one priority." Additional content was made available