HOME WEB NEWS IMAGES CLASSIFIEDS YELLOW PAGESPOLLS - SURVEYS WIKI COUNTRIES PHOTOS US UK INDIA
Cities Stocks Weather Movies Coupons Travel Blogs Health Horoscope Maps ASIA EUROPE Classifieds Yellow Pages
 local news, long beach, news journal, more information, bondi beach | ||
|
Services and Information at STEREODEALERSIWORLD.COM STEREODEALERS - car stereo dealer, stereo equipment dealer - Shopping, Jensen car stereo dealer | ||
|
optometry school, this section, pre registration, Vision therapy | ||
|
For other uses, see Neanderthal (disambiguation).
| Neanderthal Fossil range: Pleistocene | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 H. neanderthalensis La Chapelle aux Saints. | ||||||||||||||
| Conservation status | ||||||||||||||
| Scientific classification | ||||||||||||||
| ||||||||||||||
| Binomial name | ||||||||||||||
| †Homo neanderthalensis King, 1864 | ||||||||||||||
| Synonyms | ||||||||||||||
|
Palaeoanthropus neanderthalensis |
The Neanderthal (IPA: /niːˈændərθɑːl/, also with /neɪ-/, and /-tɑːl/), or Neandertal, was a species of the Homo genus (Homo neanderthalensis or Homo sapiens neanderthalensis)Tattersall I, Schwartz JH (1999). "Hominids and hybrids: the place of Neanderthals in human evolution". Proc. Natl. Acad. Sci. U.S.A. 96 (13): 7117–9. PMID 10377375. “on the view that these distinctive hominids merit species recognition in their own right as Homo neanderthalensis (e.g., refs. 4 and 5), at least as many still regard them as no more than a strange variant of our own species, Homo sapiens (6, 7)” Available on-line that inhabited Europe and parts of western and central Asia. The first proto-Neanderthal traits appeared in Europe as early as 350,000 years ago.J. L. Bischoff et al. (2003). "The Sima de los Huesos Hominids Date to Beyond U/Th Equilibrium (>350 kyr) and Perhaps to 400–500 kyr: New Radiometric Dates". J. Archaeol. Sci. (30): 275. By 130,000 years ago, complete Neanderthal characteristics had appeared and by 50,000 years ago, Neanderthals disappeared from Asia, although they did not reach extinction in Europe until 30,000 years ago. No Neanderthal skeletons of younger dating have been found, though it has been suggested that Neanderthals survived longer in Southern Iberia.[1] Climate forcing and Neanderthal extinction in Southern Iberia: insights from a multiproxy marine record - Francisco J. Jiménez-Espejo et al.The early Upper Paleolithic human skeleton from the Abrigo do Lagar Velho (Portugal) and modern human emergence in Iberia - Cidália Duarte, João Maurício, Paul B. Pettitt, Pedro Souto, Erik Trinkaus, Hans van der Plicht, and João Zilhão, PNAS Vol. 96, Issue 13, 7604-7609, June 22, 1999 [2] Neanderthal may have coexisted with modern humans up to 15,000 years after Homo sapiens had migrated into Europe.Rincon, Paul (2006-09-13). Neanderthals\' \'last rock refuge\'. BBC News. Retrieved on 2006-09-19.Mcilroy, Anne (2006-09-13). Neanderthals may have lived longer than thought. Globe and Mail. Retrieved on 2006-09-19.Richard G. Klein (March 2003). "PALEOANTHROPOLOGY: Whither the Neanderthals?". Science 299 (5612): 1525-1527. doi:10.1126/science.1082025. It is believed that the population of Neanderthals was never much more than 10,000 individuals."Stone Age feminism? Females joining hunt may explain Neanderthals\' end." Nickerson, Colin. Boston Globe, November 10, 2007[3]
Neanderthals had many adaptations to a cold climate, such as large braincase, short, robust builds, and rather large noses — traits selected by nature in cold climates.[citation needed] Their cranial capacity was larger than modern humans, indicating that their brains may have been larger, which may be due to their more robust build.[citation needed] On average, Neanderthal males stood about 1.65 m tall (just under 5\' 5") and were heavily built with robust bone structure. Females were about 1.53 to 1.57 m tall (about 5\'–5\'2").The icy truth behind Neanderthals
The characteristic style of stone tools in the Middle Paleolithic is called the Mousterian culture, after a prominent archaeological site where the tools were first found. The Mousterian culture is typified by the wide use of the Levallois technique. Mousterian tools were often produced using soft hammer percussion, with hammers made of materials like bones, antlers, and wood, rather than hard hammer percussion, using stone hammers. Near the end of the time of the Neanderthals, they created the Châtelperronian tool style, considered more advanced than that of the Mousterian. They either invented the Châtelperronian themselves or borrowed elements from the incoming modern humans who are thought to have created the Aurignacian.
Contents |
The origin of the species appeared in and near modern day Eastern South Africa about 100,000 years ago. 90,000 years ago, the Neanderthal had migrated as far as the modern day northern Mozambiqe. This is because the Neanderthal had lived along the beaches where they could be close to water. 10,000 years later, or 80,000 years ago, the Neanderthal had the entire East and North coast of Africa settled.[citation needed]
Type Specimen, Neanderthal 1.
The Neandertal is a small valley of the river Düssel in the German Federal State of North Rhine-Westphalia, located about 12 km (7.5 mi) west of Düsseldorf, the capital city of North Rhine-Westphalia. Neanderthal is now spelled two ways: the old spelling of the German word Thal, meaning "valley or dale", was changed to Tal in 1901, but the former spelling is often retained in English and always in scientific names, while the modern spelling is used in German while referring to the valley itself.
The Neander Valley was named after theologian Joachim Neander, who lived nearby in Düsseldorf in the late seventeenth century. In turn, Neanderthals were named after "Neander Valley", where the first Neanderthal remains were found. The term Neanderthal Man was coined in 1863 by Anglo-Irish geologist William King.
The original German pronunciation (regardless of spelling) is with the sound /t/. (See German phonology.) In English the term is commonly anglicised to /θ/ (th as in thin), though scientists frequently use /t/. "Neander" is a classicized form of the common German surname Neumann.
For some time, professionals debated whether Neanderthals should be classified as Homo neanderthalensis or as Homo sapiens neanderthalensis, the latter placing Neanderthals as a subspecies of Homo sapiens. Recent genetic simulations suggested that 5% of human DNA can only be accounted for by assuming a substantial contribution of Neanderthaler to the European gene pool of up to 25%.Plagnol V, Wall JD: Possible ancestral structure in human populations. PLoS Genet 2006, 2:e105.[4] Some scientists, for example Milford Wolpoff, claim that fossil evidence suggests that the two species interbred. This would support the argument that the two were the same biological species.[citation needed] Others, for example Cambridge Professor Paul Mellars, say "no evidence has been found of cultural interaction"Modern humans, Neanderthals shared earth for 1,000 years. ABC News (Australia) (2005-09-01). Retrieved on 2006-09-19. and evidence from mitochondrial DNA studies have been interpreted as evidence that Neanderthals were not a subspecies of H. sapiens.Hodges, S. Blair (2000-12-07). Human Evolution: A start for population genomics. Nature Publishing Group (Nature. 2000 Dec 7;408(6813):652-3).
Location of Neander Valley, Germany. (The highlighted areas are the modern federal states of North Rhine-Westphalia and Rhineland-Palatinate.)
Neanderthal skulls were first discovered in Engis, Belgium (1829) and in Forbes\' Quarry, Gibraltar (1848), both prior to the "original" discovery in a limestone quarry of the Neander Valley in Erkrath near Düsseldorf in August, 1856, three years before Charles Darwin\'s On the Origin of Species was published.Human Ancestors Hall: Homo neanderthalensis
The type specimen, dubbed Neanderthal 1, consisted of a skull cap, two femora, three bones from the right arm, two from the left arm, part of the left ilium, fragments of a scapula, and ribs. The workers who recovered this material originally thought it to be the remains of a bear. They gave the material to amateur naturalist Johann Carl Fuhlrott, who turned the fossils over to anatomist Hermann Schaaffhausen. The discovery was jointly announced in 1857.
The original Neandertal discovery is now considered the beginning of paleoanthropology. These and other discoveries led to the idea that these remains were from ancient Europeans who had played an important role in modern human origins. The bones of over 400 Neanderthals have been found since.
Compared to modern humans, Neanderthals were similar in height but with more robust bodies, and had distinct morphological features, especially of the cranium, which gradually accumulated more derived aspects, particularly in certain relatively isolated geographic regions. Evidence suggests that they were much stronger than modern humans;Science & Nature - Wildfacts - Neanderthal their relatively robust stature is thought to be an adaptation to the cold climate of Europe during the Pleistocene epoch.
A 2007 study confirmed that some Neanderthals had red hair and pale skin color; however, the mutation in the MC1R gene arose independently of the mutation that causes a similar pigmentation pattern in modern humans.Laleuza-Fox, Carles; Holger Römpler et al (2007-10-25). "A Melanocortin 1 Receptor Allele Suggests Varying Pigmentation Among Neanderthals". Science. doi:10.1126/science.1147417. Retrieved on 2007-10-26. Paul Rincon (2007-10-25). Neanderthals \'were flame-haired\'. BBC.co.uk. Retrieved on 2007-10-25.
Comparison of crania, sapiens (left) and neanderthalensis (right).
The following is a list of physical traits that distinguish Neanderthals from modern humans; however, not all of them can be used to distinguish specific Neanderthal populations, from various geographic areas or periods of evolution, from other extinct humans. Also, many of these traits occasionally manifest in modern humans, particularly among certain ethnic groups. Nothing is known about the shape of soft parts such as eyes, ears, and lips of Neanderthals.Scientists Build \'Frankenstein\' Neanderthal Skeleton.
|
|
The neutrality of this section is disputed. Please see the discussion on the talk page. This section has been tagged since December 2007. |
The idea that Neanderthals lacked complex language was widespread,[citation needed] despite concerns about the accuracy of reconstructions of the Neanderthal vocal tract, until 1983, when a Neanderthal hyoid bone was found at the Kebara Cave in Israel. The hyoid is a small bone that connects the musculature of the tongue and the larynx, and by bracing these structures against each other, allows a wider range of tongue and laryngeal movements than would otherwise be possible. The presence of this bone implies that speech was anatomically possible. The bone that was found is virtually identical to that of modern humans.B. Arensburg, A. M. Tillier, B. Vandermeersch, H. Duday, L. A. Schepartz & Y. Rak (April 1989). "A Middle Palaeolithic human hyoid bone". Nature (338): 758-760. doi:10.1038/338758a0.
The morphology of the outer and middle ear of Neanderthal ancestors, Homo heidelbergensis, found in Spain, suggests they had an auditory sensitivity similar to modern humans and very different from chimpanzees. They were probably able to differentiate between many different sounds.Martinez, I., L. Rosa, J.-L. Arsuaga, P. Jarabo, R. Quam, C. Lorenzo, A. Gracia, J.-M. Carretero, J.M. Bermúdez de Castro, E. Carbonell (July 2004). "Auditory capacities in Middle Pleistocene humans from the Sierra de Atapuerca in Spain". PNAS 101 (27): 9976-9981.
Neurological evidence for potential speech in neanderthalensis exists in the form of the hypoglossal canal. The canal of neanderthalensis is the same size or larger than in modern humans, which are significantly larger than the canal of australopithecines and modern chimpanzees. The canal carries the hypoglossal nerve, which controls the muscles of the tongue. This indicates that neanderthalensis had vocal capabilities similar to modern humans.Richard F. Kay, Matt Cartmill, and Michelle Balow (April 1998). "The hypoglossal canal and the origin of human vocal behavior". PNAS 95 (9): 5417-5419. A research team from the University of California, Berkeley, led by David DeGusta, suggests that the size of the hypoglossal canal is not an indicator of speech. His team\'s research, which shows no correlation between canal size and speech potential, shows there are a number of extant non-human primates and fossilized australopithecines which have equal or larger hypoglossal canal. David DeGusta, W. Henry Gilbert and Scott P. Turner (Feb 1999). "Hypoglossal canal size and hominid speech". PNAS 96 (4): 1800-1804.
Another anatomical difference between Neanderthals and Modern humans is their lack of a mental protuberance (the point at the tip of the chin). This may be relevant to speech as the mentalis muscle, one of the muscles that move the lower lip, is attached to the tip of the chin. While some Neandertal individuals do possess a mental protuberance, their chins never show the inverted T-shape of modern humans. Jeffrey Schwartz, Ian Tattersall (May 2000). "The human chin revisited: What is it, and who has it?". Journal of Human Evolution 38: 367-409. In contrast, some Neanderthal individuals show inferior lateral mental tubercles (little bumps at the side of the chin).
A recent extraction of DNA from Neanderthal bones indicates that Neanderthals had the same version of the FOXP2 gene as modern humans. This gene is known to play a role in human language.Neanderthals Had Important Speech Gene, DNA Evidence Shows
Steven Mithen (2006) proposes that the Neanderthals had an elaborate proto-linguistic system of communication which was more musical than modern human language, and which predated the separation of language and music into two separate modes of cognition.Steven Mithen, The Singing Neanderthals: the Origins of Music, Language, Mind and Body (2006).
Neanderthal Hunter, (American Mus. Nat. Hist.)
Neanderthal Tool Maker.
Neanderthal and Middle Paleolithic archaeological sites show a smaller and different toolkit than those which have been found in Upper Paleolithic sites, which were perhaps occupied by modern humans that superseded them. Fossil evidence indicating who may have made the tools found in Early Upper Paleolithic sites is still missing.
Neanderthals are thought to have used tools of the Mousterian class, which were often produced using soft hammer percussion, with hammers made of materials like bones, antlers, and wood, rather than hard hammer percussion, using stone hammers. A result of this is that their bone industry was relatively simple. However, there is good evidence that they routinely constructed a variety of stone implements. Neanderthal (Mousterian) tools most often consisted of sophisticated stone-flakes, task-specific hand axes, and spears. Many of these tools were very sharp. There is also good evidence that they used a lot of wood, objects which are unlikely to have been preserved until today.Henig, Martin. "Odd man out: Neanderthals and modern humans." British Archeology, #51, Feb 2000. [7]
Also, while they had weapons, whether they had implements that were used as projectile weapons is controversial. They had spears, made of long wooden shafts with spearheads firmly attached, but they are thought by some to have been thrusting spears.Churchill S.E. (2002) Of assegais and bayonets: Reconstructing prehistoric spear use. Evolutionary Anthropology, 11, 185-186 Still, a Levallois point embedded in a vertebra shows an angle of impact suggesting that it entered by a "parabolic trajectory" suggesting that it was the tip of a projectile.Boëda E., Geneste J.M., Griggo C., Mercier N., Muhesen S., Reyss J.L., Taha A. & Valladas H. (1999) A Levallois point embedded in the vertebra of a wild ass (Equus africanus): Hafting, projectiles and Mousterian hunting. Antiquity, 73, 394-402 Moreover, a number of 400,000 year old wooden projectile spears were found at Schöningen in northern Germany. These are thought to have been made by the Neanderthal\'s ancestors, Homo erectus or Homo heidelbergensis. Generally, projectile weapons are more commonly associated with H. sapiens. The lack of projectile weaponry is an indication of different sustenance methods, rather than inferior technology or abilities. The situation is identical to that of native New Zealand Maori - modern Homo sapiens, who also rarely threw objects, but used spears and clubs instead.Schwimmer, E.G. "Warfare of the Maori." Te Ao Hou: The New World, #36, Sept 1961, pp. 51-53. [8] Nonetheless, the fact that it is much safer to strike prey or foes from a distance where they cannot strike back would put anyone depending on close quarter weapons at a tactical disadvantage.
Although much has been made of the Neanderthal\'s burial of their dead, their burials were less elaborate than those of anatomically modern humans. The interpretation of the Shanidar IV burials as including flowers, and therefore being a form of ritual burial,R. S. Solecki (1975). "Shanidar IV, a Neanderthal flower burial in northern Iraq". [[Science (journal)|]] 190 (28): 880. has been questioned.J. D. Sommer (1999). "The Shanidar IV \'Flower Burial\': A Reevaluation of Neanderthal Burial Ritual". Cambridge Archæological Journal 9: 127–129. On the other hand, five of the six flower pollens found with Shanidar IV are known to have had \'traditional\' medical uses, even among relatively recent \'modern\' populations. In some cases Neanderthal burials include grave goods, such as bison and aurochs bones, tools, and the pigment ochre.
Neanderthals also performed many sophisticated tasks which are normally associated only with humans. For example, it is known that they controlled fire, constructed complex shelters, and skinned animals. Particularly intriguing is a hollowed-out bear femur that contains holes that may have been deliberately bored into it. This bone was found in western Slovenia in 1995, near a Mousterian fireplace, but its significance is still a matter of dispute. Some paleoanthropologists have hypothesized that it was a flute, while others believe it was created by accident through the chomping action of another bear. See: Divje Babe.
Sites where typical Neanderthal fossils have been found.
Early Neanderthals lived in the Last Glacial age for a span of about 100,000 years. Because of the damaging effects that the glacial period had on the Neanderthal sites, not much is known about the early species. Places where their remains are known include France and Spain, as well as Germany, Czech Republic, Slovakia, Croatia, GreeceAncient tooth provides evidence of Neanderthal movement and Israel.
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 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 that they occupied, since Middle-Palaeolithic looking artifacts have been found even further north, up to 60° on the Russian plain.Pavlov, P., W. Roebroeks, and J. I. Svendsen (2004). "The Pleistocene colonization of northeastern Europe: A report on recent research". Journal of Human Evolution 47 (1-2): 3-17. doi:10.1016/j.jhevol.2004.05.002. Recent evidence has extended the Neanderthal habitat range by about 1,250 miles (2,010 km) east into southern Siberia\'s Altay Mountains.Fossil DNA Expands Neanderthal RangeNeandertals Ranged Much Farther East Than Thought
Neanderthals hunted large animals, such as the mammoth. Stone-tipped wooden spears were used for hunting and stone knives were used for butchering the animals. They are also believed to have gathered wild plants like their ancestors, Homo erectus. However, they are believed to have practiced ritual defleshing. This hypothesis has been represented after researchers found marks on Neanderthal bones similar to the bones of a dead deer eaten by Neanderthals.
Intentional burial and the inclusion of grave goods are the most typical representations of ritual behavior in the Neanderthals and denote a developing ideology. However, another much debated and controversial manifestation of this ritual treatment of the dead comes from the evidence of cut-marks on the bone which has historically been viewed as evidence of ritual defleshing.
Neanderthal bones from various sites (Combe-Grenal and Abri Moula in France, Krapina in Croatia and Grotta Guattari in Italy) have all been cited as bearing cut marks made by stone tools.Andrea Thompson (2006-12-04). Neanderthals Were Cannibals, Study Confirms. Health SciTech. LiveScience. However, results of technological tests reveal varied causes.
Re-evaluation of these marks using high-powered microscopes, comparisons to contemporary butchered animal remains and recent ethnographic cases of excarnation mortuary practises have shown that perhaps this was a case of ritual defleshing.
The evidence indicating cannibalism would not distinguish Neanderthals from modern Homo sapiens. Ancient and existing Homo sapiens, including the Korowai, are known to have practiced cannibalism and/or mortuary defleshing.
Within the west Asian and European record there are five broad groups of pathology or injury noted in Neanderthal skeletons.
Neanderthals seemed to suffer a high frequency of fractures, especially common on the ribs (Shanidar IV, La Chapelle-aux-Saints ‘Old Man’), the femur (La Ferrassie 1), fibulae (La Ferrassie 2 and Tabun 1), spine (Kebara 2) and skull (Shanidar I, Krapina, Sala 1). These fractures are often healed and show little or no sign of infection, suggesting that injured individuals were cared for during times of incapacitation. The pattern of fractures, along with the absence of throwing weapons, suggests that they may have hunted by leaping onto their prey and stabbing or even wrestling it to the ground.T.D. Berger and E. Trinkaus (1995). "Patterns of trauma among Neadertals". Journal of Archaeological Science 22: 841 - 852. Retrieved on 2007-06-28.
Particularly related to fractures are cases of trauma seen on many skeletons of Neanderthals. These usually take the form of stab wounds, as seen on Shanidar III, whose lung was probably punctured by a stab wound to the chest between the 8th and 9th ribs. This may have been an intentional attack or merely a hunting accident; either way the man survived for some weeks after his injury before being killed by a rock fall in the Shanidar cave. Other signs of trauma include blows to the head (Shanidar I and IV, Krapina), all of which seemed to have healed, although traces of the scalp wounds are visible on the surface of the skulls.
Arthritis is particularly common in the older Neanderthal population, specifically targeting areas of articulation such as the ankle (Shanidar III), spine and hips (La Chapelle-aux-Saints ‘Old Man’), arms (La Quina 5, Krapina, Feldhofer) knees, fingers and toes. This is closely related to degenerative joint disease, which can range from normal, use-related degeneration to painful, debilitating restriction of movement and deformity and is seen in varying degree in the Shanidar skeletons (I-IV).
Dental enamel hypoplasia is an indicator of stress during the development of teeth and records in the striations and grooves in the enamel periods of food scarcity, trauma or disease. A study of 669 Neanderthal dental crowns showed that 75% of individuals suffered some degree of hypoplasia and the nutritional deficiencies were the main cause of hypoplasia and eventual tooth loss. All particularly aged skeletons show evidence of hypoplasia and it is especially evident in the Old Man of La Chapelle-aux-Saints and La Ferrassie 1 teeth.
Evidence of infections on Neanderthal skeletons is usually visible in the form of lesions on the bone, which are created by systematic infection on areas closest to the bone. Shanidar I has evidence of the degenerative lesions as does La Ferrassie 1, whose lesions on both femora, tibiae and fibulae are indicative of a systemic infection or carcinoma (malignant tumour/cancer).
Reconstruction of a NeanderthaI child from Gibraltar (Anthropological Institute, University of Zürich).
Possible theories for the fate of Neanderthals include the following:
According to the traditional view, modern humans (homo sapiens) began replacing Neanderthals around 45,000 years ago, as the Cro-Magnon people appeared in Europe that drew populations of Neanderthals back to regional pockets held on for thousands of years such as modern-day Croatia, Iberia and the Crimean peninsula.[clarify] The last known population was located around a cave system on the remote south facing coast of Gibraltar, from 30,000 to 24,000 years ago.
The validity of such an extensive period of cornered Neanderthal groups is recently questioned. There is no certainty anymore regarding the identity of the humans that produced the Aurignacian culture, even though the presumed westward spread of anatomically modern humans (AMHs) across Europe is still based on the controversial first dates of the Aurignacian. Currently, the oldest European anatomically modern Homo sapiens is represented by a robust modern human mandible discovered at Pestera cu Oase (south-west Romania), dated to 34–36 kya (thousand years ago). Human skeletal remains from the German site of Vogelherd, so far regarded the best association between anatomically modern Homo sapiens and Aurignacian culture, were revealed to represent intrusive Neolithic burials into the Aurignacian levels and subsequently all the key Vogelherd fossils are now dated to 3.9–5.0 thousand years ago instead.Conard, N.J. et al. (2004) Unexpectedly recent dates for human remains from Vogelherd. Nature 430, 198–201 [9]; [10] As for now, the expansion of the first anatomically modern humans into Europe can\'t be located by diagnostic and well-dated anatomically modern human fossils "west of the Iron Gates of the Danube" before 32 kya.Trinkaus, E. (2005) Early modern humans. Annu. Rev. Anthropol. 34, 207–230 [11] Moreover, these oldest anatomically modern European also possessed distinct Neanderthal features not present in ancestral modern humans in Africa, including a large bulge at the back of the skull, a more prominent projection around the elbow joint, and a narrow socket at the shoulder joint. Analysis of one skeleton\'s shoulder showed that these humans, like Neanderthal, did not have the full capability for throwing spears.[12] Humans and Neanderthals interbred, 2 November 2006 by Jacqui Hayes, Cosmos Online
Consequently, the exact nature of biological and cultural interactions between Neanderthals and other human groups between 50 and 30 thousand years ago is currently hotly contested. A new proposal resolves the issue by taking the Gravettians rather than the Aurignacians as the anatomically modern humans that contributed to the post-30 kya Eurasian genetic pool.Rapid ecological turnover and its impact on Neanderthal and other human populations - Clive Finlayson and Jose´ S. Carrión, Trends in Ecology & Evolution, Volume 22, Issue 4 , April 2007, Pages 213-222 [13] Correspondingly, the human skull fragment found at the Elbe River bank at Hahnöfersand near Hamburg was once radiocarbon dated to 36,000 years ago and seen as possible evidence for the intermixing of Neanderthals and anatomically modern humans. It is now dated to the more recent Mesolithic.From the First Humans to the Mesolithic Hunters in the Northern German Lowlands, Current Results and Trends - THOMAS TERBERGER. From: Across the western Baltic, edited by: Keld Møller Hansen & Kristoffer Buck Pedersen, 2006, ISBN 87-983097-5-7, Sydsjællands Museums Publikationer Vol. 1 [14]
Modern human findings in Abrigo do Lagar Velho, Portugal of 24,500 years ago, allegedly featuring Neanderthal admixtures, have been published.The early Upper Paleolithic human skeleton from the Abrigo do Lagar Velho (Portugal) and modern human emergence in Iberia - Cidália Duarte, João Maurício, Paul B. Pettitt, Pedro Souto, Erik Trinkaus, Hans van der Plicht, and João Zilhão, PNAS Vol. 96, Issue 13, 7604-7609, June 22, 1999 [15] However, the paleontological analysis of modern human emergence in Europe has been shifting from considerations of the Neanderthals to assessments of the biology and chronology of the earliest modern humans in western Eurasia. This focus, involving morphologically modern humans before 28,000 years ago shows accumulating evidence that they present a variable mosaic of derived modern human, archaic human, and Neanderthal features.An early modern human from the Petera cu Oase, Romania - Erik Trinkaus et al, PNAS | September 30, 2003 | vol. 100 | no. 20 | 11231-11236 [16]Early modern humans from the Petera Muierii, Baia de Fier, Romania - Andrei Soficaru*, Adrian Dobo, and Erik Trinkaus, PNAS | November 14, 2006 | vol. 103 | no. 46 | 17196-17201 [17]
While previous investigations concentrated on mitochondrial DNA (mtDNA), that due to strictly matrilineal inheritance and subsequent vulnerability to genetic drift is of limited value to disprove interbreeding, more recent investigations have access to growing strings of deciphered nuclear DNA (nDNA).
In July 2006, the Max Planck Institute for Evolutionary Anthropology and 454 Life Sciences announced that they would be sequencing the Neanderthal genome over the next two years. At three-billion base pairs, the Neanderthal genome is roughly the size of the human genome and likely shares many identical genes. It is thought that a comparison of the Neanderthal genome and human genome will expand understanding of Neanderthals as well as the evolution of humans and human brains.Moulson, Geir. "Neanderthal genome project launches", MSNBC.com, Associated Press. Retrieved on 2006-08-22.
DNA researcher Svante Pääbo has tested more than 70 Neanderthal specimens and found only one that had enough DNA to sample. Preliminary DNA sequencing from a 38,000-year-old bone fragment of a femur bone found at Vindija cave in Croatia in 1980 shows that Homo neanderthalensis and Homo sapiens share about 99.5% of their DNA. From mtDNA analysis estimates, the two species shared a common ancestor about 500,000 years ago. An article appearing in the journal Nature has calculated the species diverged about 516,000 years ago, whereas fossil records show a time of about 400,000 years ago. From DNA records, scientists hope to falsify or confirm the theory that there was interbreeding between the species.http://www.nytimes.com/2006/11/15/science/16neanderthalcnd.html A 2007 study pushes the point of divergence back to around 800,000 years ago.Pennisi, Elizabeth (2007-05-18). "ANCIENT DNA: No Sex Please, We\'re Neandertals". Science 316 (5827): 967. doi:10.1126/science.316.5827.967a. Retrieved on 2007-05-18.
Edward Rubin of the Lawrence Berkeley National Laboratory in Berkeley, California states that recent genome testing of Neanderthals suggests human and Neanderthal DNA are some 99.5 percent to nearly 99.9 percent identical.Neanderthal bone gives DNA cluesScientists decode Neanderthal genes
On November 16, 2006, Science Daily published scientific test results demonstrating that Neanderthals and ancient humans probably did not interbreed. Scientists with the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) and the Joint Genome Institute (JGI) sequenced genomic nuclear DNA (nDNA) from a fossilized Neanderthal femur. Their results more precisely indicate a common ancestor about 706,000 years ago, and a complete separation of the ancestors of the species about 376,000 years ago. Their results show that the genomes of modern humans and Neanderthals are at least 99.5% identical, but despite this genetic similarity, and despite the two species having cohabitated the same geographic region for thousands of years, there is no evidence of any significant crossbreeding between the two. Edward Rubin, director of both JGI and Berkeley Lab’s Genomics Division: “While unable to definitively conclude that interbreeding between the two species of humans did not occur, analysis of the nuclear DNA from the Neanderthal suggests the low likelihood of it having occurred at any appreciable level.”
On the other hand, a 2006 investigation suggested that at least 5% of the genetic material of modern Europeans and West Africans has an archaic origin, due to interbreeding with Neanderthal and a hitherto unknown archaic African population.Plagnol V, Wall JD: Possible ancestral structure in human populations. PLoS Genet 2006, 2:e105.[18] Plagnol and Wall arrived at this result by first calculating a "null model" of genetic characteristics that would fulfill the requirement of descendence from Homo sapiens sapiens in a straight line. Next they compared this model to the current distribution and characteristics of existing genetic polymorphisms, and concluded that this "null model" deviated considerably from what would be expected. Genetic simulations indicated this 5% of DNA not accounted for by the null model corresponds to a substantial contribution to the European gene pool of up to 25%. Future investigation—including a full scale Neanderthal genome project—is expected to cast more light on the subject of genetic polymorphisms to supply more details. Contrary to the investigation of mtDNA, the study of polymorph mutations has the potential to answer the question whether—and to what extent—Homo neanderthalensis and Homo sapiens interbred.Review: Archaic admixture in the human genome - Jeffrey D Wall1 and Michael F Hammer, Elsevier Ltd., 2006 [19]PDF (90.0 KiB)
A main proponent of the interbreeding hypothesis is Erik Trinkaus of Washington University. In a 2006 study published in Proceedings of the National Academy of Sciences, Trinkaus and his co-authors report a possibility that Neanderthals and humans did interbreed. The study claims to settle the extinction controversy; according to researchers, the human and neanderthal populations blended together through sexual reproduction. Trinkaus states, "Extinction through absorption is a common phenomenon."Humans and Neanderthals interbred and "From my perspective, the replacement vs. continuity debate that raged through the 1990s is now dead".Modern Humans, Neanderthals May Have Interbred
Popular literature has tended to greatly exaggerate the ape-like gait and related characteristics of the Neanderthals. It has been determined that some of the earliest specimens found in fact suffered from severe arthritis. The Neanderthals were fully bipedal and had a slightly larger average brain capacity than a typical modern human, though it is thought the brain may have been structured or organized differently.
In popular idiom the word neanderthal is sometimes used as an insult, to suggest that a person combines a deficiency of intelligence and an attachment to brute force, as well as perhaps implying the person is old fashioned or attached to outdated ideas, much in the same way as "dinosaur" is also used. Counterbalancing this are sympathetic literary portrayals of Neanderthals, as in the novel The Inheritors by William Golding, Isaac Asimov\'s The Ugly Little Boy and Jean M. Auel\'s Earth\'s Children series, though Auel repeatedly compares Neanderthals to modern humans unfavorably within the series, showing them to be less advanced in nearly every facet of their lives. Instead she gives them access to a \'race memory\' and uses it to explain both their cultural richness and eventual stagnation. A more serious treatment is offered by Finnish palaeontologist Björn Kurtén, in several works including Dance of the Tiger, and British psychologist Stan Gooch in his hybrid-origin theory of humans. The Neanderthal Parallax, a trilogy of science fiction novels dealing with neanderthals, written by Robert J. Sawyer, explores a scenario where neanderthals are seen as a distinct species from humans and survive in a parallel universe version of earth. The novels explore what happens when they, having developed a sophisticated technological culture of their own, open a portal to this version of the earth. The three novels are titled Hominids, Humans, and Hybrids, respectively, and all form essentially one story.
Solecki, Ralph S. "Shanidar." Grolier Multimedia Encyclopedia. 2007. Grolier Online. 25 Nov. 2007 <http://gme.grolier.com/cgi-bin/article?assetid=0264140-0>.
Wikimedia Commons has media related to:
Wikibooks has a book on the topic of
Introduction to Paleoanthropology
Wikispecies has information related to:
| Part of the series on |
|---|
