the angulations of the femur such that the knees are closer together than the hip joints.

a relative term used for quadrupedal animals (those that travel on four legs) to describe features that are closer to the belly or front of the body; opposite of dorsal. The term anterior is a synonym commonly used when referring to bipedal hominins. For the hand, palmar, and for the foot, plantar, are synonyms for ventral.

an animal with a vertebral column (i.e., backbone).

a mode of locomotion in which an animal clings and/or leaps between vertical supports.

a character inherited through many generations that has no function. For example, the human coccyx (i.e., tail bone) is the morphological remnants of a tail.