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• Human_evolution abstract "Human evolution is the evolutionary process leading up to the appearance of modern humans. While it began with the last common ancestor of all life, the topic usually covers only the evolutionary history of primates, in particular the genus Homo, and the emergence of Homo sapiens as a distinct species of hominids (or "great apes"). The study of human evolution involves many scientific disciplines, including physical anthropology, primatology, archaeology, ethology, linguistics, evolutionary psychology, embryology and genetics.Genetic studies show that primates diverged from other mammals about 85 million years ago in the Late Cretaceous period, and the earliest fossils appear in the Paleocene, around 55 million years ago. The family Hominidae diverged from the Hylobatidae (Gibbon) family 15-20 million years ago, and around 14 million years ago, the Ponginae (orangutans), diverged from the Hominidae family. Bipedalism is the basic adaption of the Hominin line, and the earliest bipedal Hominin is considered to be either Sahelanthropus or Orrorin, with Ardipithecus, a full bipedal, coming somewhat later. The gorilla and chimpanzee diverged around the same time, about 4-6 million years ago, and either Sahelanthropus or Orrorin may be our last shared ancestor with them. The early bipedals eventually evolved into the australopithecines and later the genus Homo.The earliest documented members of the genus Homo are Homo habilis which evolved around 2.3 million years ago; the earliest species for which there is positive evidence of use of stone tools. The brains of these early hominins were about the same size as that of a chimpanzee, although it has been suggested that this was the time in which the human SRGAP2 gene doubled, producing a more rapid wiring of the frontal cortex. During the next million years a process of encephalization began, and with the arrival of Homo erectus in the fossil record, cranial capacity had doubled to 850 cm3. Homo erectus and Homo ergaster were the first of the hominina to leave Africa, and these species spread through Africa, Asia, and Europe between 1.3 to 1.8 million years ago. This increase in human brain size is equivalent to every generation having an additional 125,000 neurons more than their parents. It is believed that these species were the first to use fire and complex tools. According to the Recent African Ancestry theory, modern humans evolved in Africa possibly from Homo heidelbergensis, Homo rhodesiensis or Homo antecessor and migrated out of the continent some 50,000 to 100,000 years ago, replacing local populations of Homo erectus, Homo denisova, Homo floresiensis and Homo neanderthalensis.Archaic Homo sapiens, the forerunner of anatomically modern humans, evolved between 400,000 and 250,000 years ago. Recent DNA evidence suggests that several haplotypes of Neanderthal origin are present among all non-African populations, and Neanderthals and other hominids, such as Denisova hominin may have contributed up to 6% of their genome to present-day humans, suggestive of a limited inter-breeding between these species. Anatomically modern humans evolved from archaic Homo sapiens in the Middle Paleolithic, about 200,000 years ago. The transition to behavioral modernity with the development of symbolic culture, language, and specialized lithic technology happened around 50,000 years ago according to many anthropologists although some suggest a gradual change in behavior over a longer time span.".
• Human_evolution thumbnail Fossil_hominids.jpg?width=300.
• Human_evolution wikiPageExternalLink v=onepage&q&f=false.
• Human_evolution wikiPageExternalLink Alexander1990.pdf.
• Human_evolution wikiPageExternalLink 6937476.stm.
• Human_evolution wikiPageExternalLink 091001-oldest-human-skeleton-ardi-missing-link-chimps-ardipithecus-ramidus.html.
• Human_evolution wikiPageExternalLink Flinnetal2005.pdf.
• Human_evolution wikiPageExternalLink index.shtml.
• Human_evolution wikiPageExternalLink www.becominghuman.org.
• Human_evolution wikiPageExternalLink ch25.html.
• Human_evolution wikiPageExternalLink index.html.
• Human_evolution wikiPageExternalLink encarta.htm.
• Human_evolution wikiPageExternalLink UPI-95271377122301.
• Human_evolution wikiPageID "10326".
• Human_evolution wikiPageRevisionID "606467134".
• Human_evolution alt "Map with arrows emanating from Africa, across Eurasia, to Australia and the Americas.".
• Human_evolution alt "Trellis of intermingling populations for the last two million years.".
• Human_evolution caption "A "trellis" that emphasizes back-and-forth gene flow among geographic regions.".
• Human_evolution caption "A model of human migration, based from divergence of the mitochondrial DNA . Timescale indicated by colours.".
• Human_evolution footer "Different models for the beginning of the present human species.".
• Human_evolution hasPhotoCollection Human_evolution.
• Human_evolution image "Homo_trellis.jpg".
• Human_evolution image "Map-of-human-migrations.jpg".
• Human_evolution width "200".
• Human_evolution subject Category:Anthropology.
• Human_evolution subject Category:Human_evolution.
• Human_evolution subject Category:Neogene.
• Human_evolution subject Category:Recent_single_origin_hypothesis.
• Human_evolution subject Category:Sociocultural_evolution.
• Human_evolution comment "Human evolution is the evolutionary process leading up to the appearance of modern humans. While it began with the last common ancestor of all life, the topic usually covers only the evolutionary history of primates, in particular the genus Homo, and the emergence of Homo sapiens as a distinct species of hominids (or "great apes").".
• Human_evolution label "Antropogeneza".
• Human_evolution label "Evolución humana".
• Human_evolution label "Evolutie van de mens".
• Human_evolution label "Evoluzione umana".
• Human_evolution label "Evolução humana".
• Human_evolution label "Histoire évolutive des homininés".
• Human_evolution label "Human evolution".
• Human_evolution label "Stammesgeschichte des Menschen".
• Human_evolution label "Антропогенез".
• Human_evolution label "تطور الإنسان".
• Human_evolution label "人類の進化".
• Human_evolution label "人類演化".
• Human_evolution sameAs Vývoj_člověka.
• Human_evolution sameAs Stammesgeschichte_des_Menschen.
• Human_evolution sameAs Ανθρώπινη_εξέλιξη.
• Human_evolution sameAs Evolución_humana.
• Human_evolution sameAs Giza_eboluzioa.
• Human_evolution sameAs Histoire_évolutive_des_homininés.
• Human_evolution sameAs Evolusi_manusia.
• Human_evolution sameAs Evoluzione_umana.
• Human_evolution sameAs 人類の進化.
• Human_evolution sameAs 인류의_진화.
• Human_evolution sameAs Evolutie_van_de_mens.
• Human_evolution sameAs Antropogeneza.
• Human_evolution sameAs Evolução_humana.
• Human_evolution sameAs m.02swp.
• Human_evolution sameAs Q83944.
• Human_evolution sameAs Q83944.
• Human_evolution wasDerivedFrom Human_evolution?oldid=606467134.
• Human_evolution depiction Fossil_hominids.jpg.
• Human_evolution isPrimaryTopicOf Human_evolution.