/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: jammydl https://cdn.slidesharecdn.com/profile-photo-jammydl-48x48.jpg?cb=1523121575 I'm distinguished from earlier hominin species by characteristics and habits such as bipedal stance and gait, brain capacity averaging about 1,350 cc, high forehead, small teeth and jaw, defined chin, construction and use of tools, and ability to use symbols. Most scholars believe that modern humans developed in Africa c. 150,000 years ago and spread to the Middle East c. 100,000 years ago and to other parts of Eurasia c. 40,000-50,000 years ago (this is known as the "single-origin" model). Others contend that modern humans developed from various regional populations of archaic H. sapiens or even other species of Homo in Eurasia beginning c. 250,000 years ago (the "multiregional" model). In