Homo ergaster  is an extinct chronospecies of Homo that lived in eastern and southern Africa during the early Pleistocene, about 2.5- 1.7 million years ago.There is still disagreement on the subject of the classification, ancestry, and progeny of H.. 
O sese opo pataki ni Frankfurt school.Ijiji Ọjọ́ìbí ni 1895awon ojoaláìsí ni 1973Awon amòye ara Jemani..