The thumb is the first digit (finger) of the hand. When a person is standing in the .. The evolution of the fully opposable thumb is usually associated with Homo habilis, a forerunner of Homo sapiens. This, however, is.
How did such behaviour provide reproductive advantages sufficient to .. A longer, fully opposable thumb, essential for the throwing grip, also.
The evolution of the opposable or prehensile thumb is usually associated with Homo habilis, Maybe the hands did some further evolving after bipedal gait, too.