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
Animals (The Goodies) bears for cruel taming. So, Bill and Graeme came up other ideas and put the animals to work in energy-saving domestic duties. Tim is horrified at what they have done, so he decides to support an "Animal Discrimination Act": Animals are granted equal rights with humans and it is now illegal for humans to exploit animals. This includes a ban on eating animals, which enrages carnivore Bill, who decides to "speak out" for vegetables in the "Rabid Frost Programme", where he ends up eating the leader of the Animal Revolutionary Party and make animals angry for seeing the true meaning