exhaustive list of the forms of bipedalism, but most bipedal species use one or more of these techniques. Facultative bipedalism occurs in some species of antbears...

quadruped 'four feet'. Limited and exclusive bipedalism can offer a species several advantages. Bipedalism raises the head; this allows a greater field...

consistent with habitual bipedalism. However, recent postcranial evidence suggests characteristics consistent with habitual bipedalism and arboreal clambering...

Nonetheless, it remains a matter of controversy as to how bipedalism first emerged. The advantages of bipedalism were that it left the hands free to grasp objects...

Homo habilis, an advanced grasping-capable hand was accompanied by facultative bipedalism, possibly implying, assuming a co-opted evolutionary relationship...

have occasionally walked on its hind legs as a facultative biped. Other possible adaptations to bipedalism in Euparkeria include rows of osteoderms that...

danger or foraging), Protoceratops could have employed a rapid, facultative bipedalism. He also noted that the flat and wide pedal unguals of Protoceratops...

zeugopodium, or lower leg. This would have enabled facultative bipedalism in Prorotodactylus, and a wholly bipedal gait in later dinosauromorphs. Pace angulation...

dictionary. As an adjective, obligate means "by necessity" (antonym facultative) and is used mainly in biology in phrases such as: Obligate aerobe, an...

Protoceratops juveniles indicates that protoceratopsids were able to employ facultative bipedalism when young and became obligate quadrupeds in adulthood. However...