41. Just like bipedalism presents problems together with benefits, this anxiety occurs with the existence of human higher mental faculties. 42. A trackway of a juvenile has led some to believe that they were capable of bipedalism , though this is disputed. 43. It is possible that Bipedalism evolved in the trees, and was later applied to the Savannah as a vestigial trait. 44. Dated to 3.7 million years ago, they were the oldest known evidence of hominin bipedalism at that time. 45. This would have enabled facultative bipedalism in " Prorotodactylus ", and a wholly bipedal gait in later dinosauromorphs. 46. Pace angulation is relatively high in " Prorotodactylus ", and increased as bipedalism becomes obligate in later dinosauromorphs. 47. Dr . Trevathan explains that women cannot perform these essential tasks on their own, and for that we can blame bipedalism . 48. Bipedalism developed independently in dinosaurs, which passed it on to birds, and it developed later in mammals, said Reisz.49. However, it remains a matter of controversy as to how bipedalism first emerged ( several concepts are still being studied ). 50. The German anthropologist Hermann Klaatsch relied on a neo-Lamarckian model of evolution to try and explain the origin of bipedalism .
