Unipedalism Unipedalism The term uniped (from Latin "uni" = one + "ped" = foot) refers to a person or creature with only one foot and one leg, as contrasted with a biped (two legs) and a quadruped (four legs). Moving using only one leg is known as unipedal movement. Many bivalvia and nearly all gastropoda molluscs have evolved only one foot. Through accidents (i.e. amputation) or birth abnormalities it is also possible for an animal or a human being to end up with only a single leg. One major study of mythological unipeds is Teresa Pàroli (2009): 'How many are the
Efraasia hands and feet. Like many "primitive" sauropodomorphs, "Efraasia" might have been partially bipedal and partly quadrupedal. It had long fingers and mobile thumbs, with which it would have been able to grasp food, but the shape of its wrists might have allowed it to walk easily on all fours. Some researchers however, contend that the lower arm did not allow pronation, a rotation of the radius around the ulna, so that the hand could not be directed downward, making the animal an obligate biped. The skull is small, pointed and triangular. There are four teeth in the premaxilla. The neck