The forelimbs are less than half the length of the hind limbs, which suggests an obligatory bipedal posture.
In contrast, the three-toed hindlimbs were long and thick, supporting the body in a bipedal posture.
The frontal lobes also seem to be implicated in the connection between vision and erect bipedal posture.
The other suspected function of the frontal lobes is to make possible mankind's bipedal posture.
Leidy concluded, contrary to the view prevailing at the time, that this dinosaur could adopt a bipedal posture.
This concept dates from Joseph Leidy's 1865 reconstruction of Hadrosaurus, the first to depict a dinosaur in a bipedal posture.
Jordania proposed that in order to look bigger early hominids started to use bipedal posture.
The evolution of humans involved lifting the nose away from the noxious ground environment as they adopted a bipedal posture (Aiello and Dean 1990).
He maintained a bipedal posture this time.
The three-toed hind limbs were long and thick, supporting the body in a bipedal posture.