Neanderthal - Habitat and Range

Habitat and Range

Early Neanderthals lived in the Last glacial period for a span of about 100,000 years. Because of the damaging effects the glacial period had on the Neanderthal sites, not much is known about the early species. Countries where their remains are known include most of Europe south of the line of glaciation, roughly along the 50th parallel north, including most of Western Europe, including the south coast of Great Britain, Central Europe and the Balkans, some sites in Ukraine and in western Russia and east of Europe in Siberia to the Altai Mountains and south through the Levant to Indus River. It is estimated that the total Neanderthal population across this habitat range numbered at around 70,000 at its peak.

Neanderthal fossils have not been found to date in Africa, but there have been finds rather close to Africa, both on Gibraltar and in the Levant. At some Levantine sites, Neanderthal remains, in fact, date after the same sites were vacated by modern humans. Mammal fossils of the same time period show cold-adapted animals were present alongside these Neanderthals in this region of the Eastern Mediterranean. This implies Neanderthals were better adapted biologically to cold weather than modern humans and at times displaced them in parts of the Middle East when the climate got cold enough.

Homo sapiens sapiens appears to have been the only human type in the Nile River Valley during these periods, and Neanderthals are not known to have ever lived south-west of modern Israel. When further climate change caused warmer temperatures, the Neanderthal range likewise retreated to the north along with the cold-adapted species of mammals. Apparently these weather-induced population shifts took place before modern people secured competitive advantages over the Neanderthal, as these shifts in range took place well over ten thousand years before modern people totally replaced the Neanderthal, despite the recent evidence of some successful interbreeding.

There were separate developments in the human line, in other regions such as Southern Africa, that somewhat resembled the European and Western/Central Asian Neanderthals, but these people were not actually Neanderthals. One such example is Rhodesian Man (Homo rhodesiensis) who existed long before any classic European Neanderthals, but had a more modern set of teeth, and arguably some H. rhodesiensis populations were on the road to modern H. sapiens sapiens. At any rate, the populations in Europe and West/Central Asia underwent more and more "Neanderthalization" as time went on. There is some argument that H. rhodesiensis in general was ancestral to both modern humans and Neanderthals, and that at some point the two populations went their separate ways, but this supposes that H. rhodesiensis goes back to around 600,000 years ago.

To date, no intimate connection has been found between these similar archaic people and the Western/Central Eurasian Neanderthals, at least during the same time as classic Eurasian Neanderthals, and H. rhodesiensis seems to have lived about 600,000 years ago, long before the time of classic Neanderthals. This said, some researchers think that H. rhodesiensis may have lived much later than this period, depending on the method used to date the fossils, leaving this issue open to debate. Some H. rhodesiensis features, like the huge brow ridge, may have been caused by convergent evolution. There is no evidence to date that Neanderthals knew how to construct boats or rafts, and the paucity of human fossils in North Africa west of the Nile Valley should be noted.

It appears incorrect, based on present research and known fossil finds, to refer to any fossils outside Europe or Western and Central Asia as true Neanderthals. They had a known range that possibly extended as far east as the Altai Mountains, but not farther to the east or south, and apparently not into Africa. At any rate, in North-East Africa the land immediately south of the Neanderthal range was possessed by modern humans Homo sapiens idaltu or Homo sapiens, since at least 160,000 years before the present. 160,000 year old hominid fossils at Jebel Irhoud in Morocco were previously thought to be Neanderthal, but it is now clear that they are early modern humans.

Classic Neanderthal fossils have been found over a large area, from northern Germany to Israel and Mediterranean countries like Spain and Italy in the south and from England and Portugal in the west to Uzbekistan in the east. This area probably was not occupied all at the same time. The northern border of their range, in particular, would have contracted frequently with the onset of cold periods. On the other hand, the northern border of their range as represented by fossils may not be the real northern border of the area they occupied, since Middle Palaeolithic-looking artifacts have been found even further north, up to 60° N, on the Russian plain. Recent evidence has extended the Neanderthal range by about 1,250 miles (2,010 km) east into southern Siberia's Altai Mountains.