Drawing on archaeological and skeletal evidence from Sub-Saharan Africa, North Africa, Western Asia, Europe, Australasia and East Asia in turn, this revised thesis compares anatomical evidence across continents to determine the location of modern man's origins and so contribute to the great Replacement vs. Multiregional' origins debate. The study argues that the evidence indicates two centres of origin, in Africa and Western Asia and in Australasia and East Asia but there would have been genetic interflows between the two. Modern man migrated to Europe where there was a process of assimilation and replacement' of the local Neanderthal populations. This is largely a technical study, combining morphometric study of hominids from numerous sites with the presentation and assessment of claims made by palaeontologists and archaeologists over the last fifty years.