Many paleoanthropologists are now using the term Homo ergaster for the non-Asian forms of this group . They reserve H. erectus only for those fossils found in the Asian region that meet certain requirements ( as to skeleton and skull ) which differ slightly from ergaster . Many paleoanthropologists now use the term Homo ergaster for the non-Asian forms of this group , and reserve Homo erectus only for those fossils that are found in Asia and meet certain skeletal and dental requirements which differ slightly from H. ergaster .