: Taxon of tetrapods, defined by embryonic development.
: A major group of therapsid. They were toothless herbivores.
: a shelf of muscle extending between the thorax and abdomen of mammals.
: warm-blooded animals keep their core body temperature at a
nearly constant level regardless of the temperature of the surrounding
: warm-blooded animals keep their core body temperature at a nearly
constant level regardless of the temperature of the surrounding
: lower back part of the hip bone.
: largest bones of the face, except for the mandible, and form the upper jaw.
: a saucer-shaped membrane bone situated at the back and lower part of the cranium.
: pair of small cranial bones at the tip of the jaws of many animals, connected to the maxilla and the nasals.
: One of the three bones which makes up the pelvis.
: systematic difference in form between individuals of different sex in the same species.
: bilaterally symmetry holes in the back of the skull.
: hairs specialised for tactile sensation.
: embryo develops inside the body of the mother. Mother then gives birth to live young.