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 Are Like That 9, 1939 Animals Are Like That Animals Are Like That! was Frank Buck’s sixth book, which continued his stories of capturing exotic animals. If you should find yourself with a monkey or ape on your hands and no knowledge of what to do with it, Buck tells co-author Carol Weld, just treat it like a child. And the elephant, like a man in the tropics, needs a sheltered siesta in mid-afternoon because he is susceptible to sunstroke. Monkeys pick up human ways and copy them. But you should never, never trust a tiger, any more than you should trust a