This was clearly the work of Homo Habilis, our tool-making ancestor.
这显然是能人(会制造工具的人类先祖)的作品。
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Dr Berger posits that sediba may have evolved directly into Homo erectus, leaving habilis as an evolutionary sideline, and not even part of the genus Homo.
Archeological finds in the Olduvai Gorge include stone tools, and skeletal remains of Homo Habilis and Homo Erectus, as well as bones of, now extinct, wild animals.