摘要：Neanderthals are a group of fossil humans that inhabited Western Eurasia from approximately 300 to 30,000 years ago (ka).They vanished from the fossil record a few millennia after the first modern humans appeared in Europe (ca.40 ka BP).They are characterized by a unique combination of distinctive anatomical features, and are found with stone tools of the Mousterian stone tool industry.Current consensus views them as a distinct Eurasian human lineage isolated from the rest of the Old World and sharing a common ancestor with modern humans sometime in the early Middle Pleistocene.The extreme cold of the European Ice Ages is considered at least partly responsible for the evolution of some of the distinctive Neanderthal anatomy, although other factors (functional demands, effects of chance in small populations) were probably also important.The causes for the Neanderthal extinction are not well understood.Worsening climate and competition with modern humans are implicated.Neanderthals were our sister species, much more closely related to us than the chimpanzees, our closest living relatives are today.
