Extinct Eurasian species or subspecies of archaic humans / From Wikipedia, the free encyclopedia

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Neanderthals (/niˈændərˌtɑːl, n-, -ˌθɑːl/ nee-AN-də(r)-TAHL, nay-, -THAHL;[7] Homo neanderthalensis or H. sapiens neanderthalensis), also written as Neandertals, are an extinct species or subspecies of archaic humans who lived in Eurasia until about 40,000 years ago.[8][9][10][11] The type specimen, Neanderthal 1, was found in 1856 in the Neander Valley in present-day Germany.

Quick facts: Neanderthal Temporal range Middle to Late Pl...
Temporal range: Middle to Late Pleistocene 0.43–0.04 Ma
Slightly angled head-on view of a Neanderthal skeleton, stepping forward with the left leg
An approximate reconstruction of a Neanderthal skeleton. The central rib-cage (including the sternum) and parts of the pelvis are from modern humans.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Hominidae
Subfamily: Homininae
Tribe: Hominini
Genus: Homo
H. neanderthalensis
Binomial name
Homo neanderthalensis
King, 1864
Stretching across all of Portugal, Spain, Switzerland, Italy, England, southern Germany and Austria, all of the Czech Republic, Hungary, Romania, Croatia, Montenegro, the Peloponnesian Peninsula, the Crimean peninsula, the Black Sea–Caspian Steppe west of the Caucasus, southern Turkey, northern Syria, the Levant, northern Iraq spilling over into Iran, the east end of Uzbekistan, and in Russia just northeast of Kazakhstan
Known Neanderthal range in Europe (blue), Southwest Asia (orange), Uzbekistan (green), and the Altai Mountains (violet)
    • H. stupidus
      Haeckel, 1895[2]
    • H. europaeus primigenius
      Wilser, 1898
    • H. primigenius
      Schwalbe, 1906[3]
    • H. antiquus
      Adloff, 1908
    • H. transprimigenius mousteriensis
      Farrer, 1908
    • H. mousteriensis hauseri
      Klaatsch 1909[4][5]
    • H. priscus
      Krause, 1909
    • H. chapellensis
      von Buttel-Reepen, 1911
    • H. calpicus
      Keith, 1911
    • H. acheulensis moustieri
      Wiegers, 1915
    • H. lemousteriensis
      Wiegers, 1915
    • H. naulettensis
      Baudouin, 1916
    • H. sapiens neanderthalensis
      Kleinshmidt, 1922
    • H. heringsdorfensis
      Werthe, 1928
    • H. galilensis
      Joleaud, 1931
    • H. primigenius galilaeensis
      Sklerj, 1937
    • H. kiikobiensis
      Bontsch-Osmolovskii, 1940
    • H. sapiens krapinensis
      Campbell, 1962
    • H. erectus mapaensis
      Kurth, 1965
    • P. neanderthalensis
      McCown and Keith, 1939[6]
    • P. heidelbergensis
      McCown and Keith, 1939[6]
    • P. ehringsdorfensis
      Paterson, 1940[6]
    • P. krapinensis
      Sergi, 1911[6]
    • P. palestinensis
      McCown and Keith, 1939[6]
    • P. europaeus
      Sergi, 1910
    • P. atavus
      Haeckel, 1895
    • P. tabunensis
      Bonarelli, 1944
    • A. neanderthalensis
      Arldt, 1915
    • A. primigenius
      Abel, 1920
    • A. neanderthalensis
      Dawkins, 1926

The line of Neanderthals split from that of modern humans but when that occurred is not clear; studies have produced various times ranging from 315,000[12] to more than 800,000 years ago.[13] The date of divergence of Neanderthals from their ancestor H. heidelbergensis is also unclear. The oldest potential Neanderthal bones date to 430,000 years ago, but the classification remains uncertain.[14] Neanderthals are known from numerous fossils, especially from after 130,000 years ago.[15]

The reasons for Neanderthal extinction are disputed.[16][17] Theories for their extinction include demographic factors such as small population size and inbreeding, competitive replacement,[18] interbreeding and assimilation with modern humans,[19] climate change,[20][21][22] disease,[23][24] or a combination of these factors.[22]

For much of the early 20th century, European researchers depicted Neanderthals as primitive, unintelligent, and brutish. Although knowledge and perception of them has markedly changed since then in the scientific community, the image of the unevolved caveman archetype remains prevalent in popular culture.[25][26] However, Neanderthal technology was quite sophisticated. It includes the Mousterian stone-tool industry[27][28] and the abilities to create fire[29][30] and build cave hearths,[31][32] make adhesive birch bark tar,[33] craft at least simple clothes similar to blankets and ponchos,[34] weave,[35] go seafaring through the Mediterranean,[36][37] and make use of medicinal plants,[38][39][40] as well as treat severe injuries,[41] store food,[42] and use various cooking techniques such as roasting, boiling,[43] and smoking.[44] Neanderthals made use of a wide array of food, mainly hoofed mammals,[45] but also other megafauna,[25][46] plants,[47][48][49] small mammals, birds, and aquatic and marine resources.[50] Although they were probably apex predators, they still competed with cave bears, cave lions, cave hyenas, and other large predators.[51] A number of examples of symbolic thought and Palaeolithic art have been inconclusively[52] attributed to Neanderthals, namely possible ornaments made from bird claws and feathers[53][54] or shells,[55] collections of unusual objects including crystals and fossils,[56] engravings,[57] music production (possibly indicated by the Divje Babe flute),[58] and Spanish cave paintings contentiously[59] dated to before 65,000 years ago.[60][61] Some claims of religious beliefs have been made.[62] Neanderthals were likely capable of speech, possibly articulate, although the complexity of their language is not known.[63][64]

Compared with modern humans, Neanderthals had a more robust build and proportionally shorter limbs. Researchers often explain these features as adaptations to conserve heat in a cold climate, but they may also have been adaptations for sprinting in the warmer, forested landscape that Neanderthals often inhabited.[65] Nonetheless, they had cold-specific adaptations, such as specialised body-fat storage[66] and an enlarged nose to warm air[67] (although the nose could have been caused by genetic drift[68]). Average Neanderthal men stood around 165 cm (5 ft 5 in) and women 153 cm (5 ft 0 in) tall, similar to pre-industrial modern Europeans.[69] The braincases of Neanderthal men and women averaged about 1,600 cm3 (98 cu in) and 1,300 cm3 (79 cu in) respectively,[70][71][72] which is considerably larger than the modern human average.[73] The Neanderthal skull was more elongated and the brain had smaller parietal lobes[74][75][76] and cerebellum,[77][78] but larger temporal, occipital, and orbitofrontal regions.[79][80]

The total population of Neanderthals remained low, proliferating weakly harmful gene variants[81] and precluding effective long-distance networks. Despite this, there is evidence of regional cultures and thus of regular communication between communities.[82][83] They may have frequented caves and moved between them seasonally.[84] Neanderthals lived in a high-stress environment with high trauma rates, and about 80% died before the age of 40.[85]

The 2010 Neanderthal genome project's draft report presented evidence for interbreeding between Neanderthals and modern humans.[86][87][88] It possibly occurred 316,000 to 219,000 years ago,[89] but more likely 100,000 years ago and again 65,000 years ago.[90] Neanderthals also appear to have interbred with Denisovans, a different group of archaic humans, in Siberia.[91][92] Around 1–4% of genomes of Eurasians, Indigenous Australians, Melanesians, Native Americans, and North Africans is of Neanderthal ancestry, while the inhabitants of sub-Saharan Africa have only 0.3% of Neanderthal genes, save possible traces from early sapiens-to-Neanderthal gene flow and/or more recent back-migration of Eurasians to Africa. In all, about 20% of distinctly Neanderthal gene variants survive today.[93] Although many of the gene variants inherited from Neanderthals may have been detrimental and selected out,[81] Neanderthal introgression appears to have affected the modern human immune system,[94][95][96][97] and is also implicated in several other biological functions and structures,[98] but a large portion appears to be non-coding DNA.[99]