Fossil footprints reveal our modern walk in the making

 作者:干趼脾     |      日期:2019-03-09 02:01:01
By Robert Adler FOOTPRINTS laid down near Lake Turkana in north-west Kenya 1.5 million years ago were made by human ancestors with essentially modern foot anatomy and gait. They are the second oldest hominin footprints known, after the 3.7-million-year-old Laetoli prints found by anthropologist Mary Leakey in Tanzania in 1978, which are more ape-like and are suspected to be from a species of Australopithecus (see diagram). More importantly, they are the oldest made by human ancestors; probably early Homo erectus, who was thought to share our stature, foot anatomy and springy,