physical evolution of humans
... man live at the same time as dinosaurs? • The answer to that one is simple. Nah! No way. Not a chance. • Nobody knows for sure why dinosaurs disappeared, but they do know that dinosaurs died out about 65 million years ago. The first hominids (human-like primates) did not appear until 3.6 million yea ...
... man live at the same time as dinosaurs? • The answer to that one is simple. Nah! No way. Not a chance. • Nobody knows for sure why dinosaurs disappeared, but they do know that dinosaurs died out about 65 million years ago. The first hominids (human-like primates) did not appear until 3.6 million yea ...
World.GeographyWeek2Extension
... When the study of human origins intensified in the 20th century, two main theories emerged to explain the archaeological and fossil record: one, known as the multi-regional hypothesis, suggested that a species of human ancestor dispersed throughout the globe, and modern humans evolved from this pred ...
... When the study of human origins intensified in the 20th century, two main theories emerged to explain the archaeological and fossil record: one, known as the multi-regional hypothesis, suggested that a species of human ancestor dispersed throughout the globe, and modern humans evolved from this pred ...
Standard 6.1 Lesson: Identify sites in Africa where archaeologists
... increase our knowledge of the true origins of our species. Among the oldest fossil finds of what are thought to be anatomically modern humans come from a number of excavated sites near the Omo River at Omo National Park in southwestern Ethiopia. These bones were first found from 1967 to 1974 by a te ...
... increase our knowledge of the true origins of our species. Among the oldest fossil finds of what are thought to be anatomically modern humans come from a number of excavated sites near the Omo River at Omo National Park in southwestern Ethiopia. These bones were first found from 1967 to 1974 by a te ...
Paleoanthropologists use models to show humans may
... place of origin for anatomically modern humans, their dispersal pattern out of the continent continues to be intensely debated. In extant human populations, the observation of decreasing genetic and phenotypic diversity at increasing distances from sub-Saharan Africa has been interpreted as evidence ...
... place of origin for anatomically modern humans, their dispersal pattern out of the continent continues to be intensely debated. In extant human populations, the observation of decreasing genetic and phenotypic diversity at increasing distances from sub-Saharan Africa has been interpreted as evidence ...
emergence of humans
... Hominids – (human like creatures) began to appear 4 million years ago where it diverged from apes. They could walk on two feet (bipedalism) and had larger brains. - Ardipithecus Ramidus – fossils recently found and position still uncertain. It was believed to have chimplike and human features. ...
... Hominids – (human like creatures) began to appear 4 million years ago where it diverged from apes. They could walk on two feet (bipedalism) and had larger brains. - Ardipithecus Ramidus – fossils recently found and position still uncertain. It was believed to have chimplike and human features. ...
Essential Questions
... Homo Erectus – person who walks upright o 1.8 million to 30,000 years ago o Hunters and gatherers o First to walk upright and use fire o Developed more advanced tools o The first hominids to move from Africa (India, China, and Europe) ...
... Homo Erectus – person who walks upright o 1.8 million to 30,000 years ago o Hunters and gatherers o First to walk upright and use fire o Developed more advanced tools o The first hominids to move from Africa (India, China, and Europe) ...
Recent African origin of modern humans
In paleoanthropology, the recent African origin of modern humans, or the ""out of Africa"" theory (OOA), is the most widely accepted model of the geographic origin and early migration of anatomically modern humans. The theory is called the ""out-of-Africa"" theory in the popular press, and the ""recent single-origin hypothesis"" (RSOH), ""replacement hypothesis"", or ""recent African origin model"" (RAO) by experts in the field. The concept was speculative before it was corroborated in the 1980s by a study of present-day mitochondrial DNA, combined with evidence based on physical anthropology of archaic specimens.Genetic studies and fossil evidence show that archaic Homo sapiens evolved to anatomically modern humans solely in Africa between 200,000 and 60,000 years ago, that members of one branch of Homo sapiens left Africa at some point between 125,000 and 60,000 years ago, and that over time these humans replaced other populations of the genus Homo such as Neanderthals and Homo erectus. The date of the earliest successful ""out of Africa"" migration (earliest migrants with living descendants) has generally been placed at 60,000 years ago based on genetics, but migration out of the continent may have taken place as early as 125,000 years ago according to Arabian archaeological finds of tools in the region.The recent single origin of modern humans in East Africa is the predominant position held within the scientific community. There are differing theories on whether there was a single exodus or several. An increasing number of researchers believe that ""long-neglected North Africa"" may have been the original home of the first modern humans to migrate out of Africa.The major competing hypothesis is the multiregional origin of modern humans, which envisions a wave of Homo sapiens migrating earlier from Africa and interbreeding with local Homo erectus populations in multiple regions of the globe. Most multiregionalists still view Africa as a major wellspring of human genetic diversity, but allow a much greater role for hybridization.Genetic testing in the last decade has revealed that several now extinct archaic human species may have interbred with modern humans. These species have been claimed to have left their genetic imprint in different regions across the world: Neanderthals in all humans except Sub-Saharan Africans, Denisova hominin in Australasia (for example, Melanesians, Aboriginal Australians and some Negritos) and there could also have been interbreeding between Sub-Saharan Africans and an as-yet-unknown hominin (possibly remnants of the ancient species Homo heidelbergensis). However, the rate of interbreeding was found to be relatively low (1–10%) and other studies have suggested that the presence of Neanderthal or other archaic human genetic markers in modern humans can be attributed to shared ancestral traits originating from a common ancestor 500,000 to 800,000 years ago.