Chordate of the three subdivisions of chordates, all have distinct skulls. They include the hagfish, which have no vertebrae. Michael J. Benton commented that "craniates are characterized by their heads, just as chordates, or possibly all deuterostomes, are by their tails". Most craniates are vertebrates, in which the notochord is replaced by the vertebral column. These consist of a series of bony or cartilaginous cylindrical vertebrae, generally with neural arches that protect the spinal cord, and with projections that link the vertebrae. However hagfish have incomplete braincases and no vertebrae, and are therefore not regarded as vertebrates, but as members of
Master of Animals Master of Animals The Master of Animals or Lord of Animals is a motif in ancient art showing a human between and grasping two confronted animals. It is very widespread in the art of the Ancient Near East and Egypt. The figure is normally male, but not always, the animals may be realistic or fantastical, and the figure may have animal elements such as horns, or an animal upper body. Unless he is shown with specific divine attributes, he is typically described as a hero, although what the motif represented to the cultures which created the works probably varies greatly.