Table of contents : Introduction From Linn to Leakey: Six Signposts in Human Evolution The Excavation of the Cave at Chou-koό-tien in 1927 and 1928: A Postscript Consensus, Controversy and Complications How Many Species of Hominids at Lake Turkana? Early African Hominid Phylogenesis: A Re-evaluation Homo erectus and Human Evolution in the African Middle Pleistocene A Survey and Synthesis of the African Hominids of the Late Tertiary and Early Quaternary Periods Early Man, Environment and Tools Possible Ways of Analysing the Techniques of Early Man European Homo erectus and the Origin of Homo sapiens Pleistocene Mammalian Faunas in the Holarctic Region New Materials of Skeletal Remains of Ancient Peoples in the Territory of the Soviet Union The Pithecanthropus of Indonesia: Phenotype, Genetics and Ecology Natural Selection and Genetic Drift in Early Man Palaeoanthropology in the New China The Differences between Australopithecus and Homo: Preliminary Conclusions from the Omo Research Expedition's Studies Casting the Net Wide: A Review of Archaeological Evidence for Early Hominid Land-use and Ecological Relations Evidence Using Viral Gene Sequences Suggesting an Asian Origin of Man Major Trends in Human Evolution