I take Prehistory to mean the study of the human species @, that is of people like us, over time, from the point of view of population growth, geographical spread, conflict, and development of settlement and civilisation. Much of the evidence, even for recent times comes from the methods of Archaeology. The length of time covered by prehistory of course depends on where you choose to start. I conclude at the invention of writing, which marks the start of what I call Palaeohistory, 6000 years ago. If we take the earliest Humans as existing 6 million years ago then Prehistory covers a period of 12,000 Ages of 500 years, less the six ages of palaeohistory and the six ages of recorded history.
Sections on this page: Evolution of the Human Species The Migration and Settlement of Modern Humans From Settlement to Civilisation
−65,000,000 Humans are among more than 200 species of primates living on Earth today. When most dinosaurs went extinct about 65 million years ago, mammals moved into newly vacated territories and rapidly evolved into many new species, including the ancestors of today's primates. Over the past 65 million years, many now-extinct primate species flourished around the world. Extinct primates include: Plesiadapis (56 million years old), Notharctus (48 million years old), Aegyptopithecus (30 million years old), Proconsul (18 million years old), Sivapithecus (8 million years old). [source: AMNH]
−23,000,000 Humans and apes are the only living members of a once diverse superfamily of primates, called Hominoidea, that thrived in East African forests beginning about 23 million years ago. Today only a few groups survive: gibbons, orangutans, gorillas, chimpanzees and humans. What do most living primates have in common? Large brains (in relation to body size). Vision more important than sense of smell. Hands adapted for grasping. Long life spans and slow growth. Few offspring, usually one at a time. Complex social groups. [source: AMNH]
−6,000,000 Humans are the only remaining descendants of a once-varied family of primates called Hominidae. By studying the DNA from humans, and from closely related species such as chimpanzees and Neanderthals, we are piecing together the complex history of human evolution. Human DNA is, on average, 96% identical to the DNA of our most distant primate relatives, and nearly 99% identical to our closest relatives, chimpanzees and bonobos. By comparing DNA sequences from humans and chimpanzees, experts calculated that the last human-chimp ancestor lived roughly six million years ago. Later, the discovery of a hominid fossil dating back six to seven million years supported this claim. [source: AMNH] According to Wikipedia, the upright-walking common ancestor of humans and chimpanzees Sahelanthropus tchadensis appeared around 6 to 7 million years ago.
Recent discoveries of 'little people' in Flores and Palau.
'Hobbit' wrist bones suggest a distinct species, New Scientist 2007 @
Small-bodied humans from Palau, 2008 @
Discovery challenges finding of a separate human species, New York Times 2008 @
−2,500,000 The Natural History Museum @ claims that: The oldest known artefacts in the world were found in Ethiopia and were made by our very distant ancestors over 2.5 million years ago.
−200,000 According to Wikipedia anatomically modern humans appeared under 200,000 years ago. Other sources give −133,000 or −125,000 as the date of earliest fossils of anatomically modern humans.
−113,000 Beginning of the last ice age
−100,000 Myths of human origins often imagine everyone descending from a single couple, as in the
Adam and Eve stories in the Hebrew myths. The biological evidence traces us back to a population of a few thousand.
Does Genetics point to a single primal couple? @.
Who were mitochondrial eve and y-chromosome adam? @.
−83,000 Human migration out of Africa, made possible by lower sea levels. Genetic evidence suggests human population fell to about 10,000 at some stage.
−70,000 The disastrous Toba event in Indonesia, on the migration route of humans from Asia to Australia,
that may have nearly wiped out humans and caused a bottleneck in human evolution:
Humans-nearly-wiped-out-70000-years-ago-study-says [RDF] @
Close call [CNN] @
Human line nearly split in two [BBC] @
Toba catastrophe theory [Wikipedia] @
The Mt Toba event @
−60,000 By comparing DNA sequences from humans living all over the world today, researchers learned that modern humans first migrated from Africa into Asia and Australia about 60,000 years ago. [source: AMNH]
−48,000 Humans reach Japan via a land-bridge from Korea.
−43,000 Earlest known musical instrument, a bone flute from N Africa.(?)
−41,000 In 1995, Ivan Turk found an approximately 43,100 year-old juvenile cave bear femur, pierced by two holes, at the Divje Babe cave site, near Cerkno, Slovenia. It has been claimed to be part of a Neanderthal flute @, but this is subject to debate.
−40,000 Cro-Magnon humans enter Europe from the Near East. Modern humans reach Australia.
−38,000 Cro-Magnon humans compete with Neanderthal humans in Europe. Migrations by sea from SE asia to the land-mass that became Australia and New Guinea. A vulture-bone flute @ @ found in 2008 with fragments of mammoth-ivory flutes in Hohle Fels cave, Germany. Other fragments found at Geissenklösterle nearby were dated to −33000.
−35,000 Modern humans in America, from Asia.
−35,000 According to a New Scientist article: @ "Human geography is mapped in the genes." "Both teams found that southern Europeans boast more overall genetic diversity than Scandinavians, British and Irish. That makes perfect sense with the major migration waves that went into Europe," says Kayser, noting Homo sapien's European debut 35,000 years ago, post-ice age expansions 20,000 years ago, and movements propelled by the advent of farming 10,000 years ago. In each case, members of established southern populations struck north."
−33,000; Beginnings of cave art in Europe @
The oldest known is that at Chauvet in France, according to radiocarbon dating.
Other principal sites are at Lascaux, Niaux and Cosquer.
These caves also show natural acoustic resonance @. In at least ten locations, drawings of horses, bison, and mammoths seem to match locations that focus, amplify, and transform the sounds of human voices and musical instruments. "In the cave of Niaux in Aričge, most of the remarkable paintings are situated in the resonant Salon Noir, which sounds like a Romanesque chapel" according to Iegor Reznikoff, an acoustics expert at the University of Paris who conducted the research. (See also −15,000 and −12,000).
−29,000 Humans reach Tasmania.
−26,000 Neanderthals become extinct in spain, their last stronghold.
−29/25000; Oldest known ceramic: the Venus of Dolni Vestonici figurine, Moravia, Czech Republic @.
−25,000 Cave dwellers in Brazil (predating the Clovis culture in North America). The Pedra Furada sites @.
−18,000 Some cave paintings feature musicians. (?) First rock reliefs carved in Asia.
−16,000 ice age reaches its peak, sea 130 m = 425 ft below modern levels.
−15,000; Cave paintings at Lascaux, France, found in 1940, depict bison, stag, reindeer, bulls and horses @.
Last rainy period in North Africa.
−13,500 (or earlier ?) humans reach N America via a land bridge between Siberia and Alaska. Developing the Clovis culture @.
−12,700 Younger Dryas or Clovis comet disaster in Great Lakes area of N. America @ @ @ @ @.
−12,700; Earliest surviving pottery: Jomon "rope-patterned" pottery, found in numerous sites in Japan @ @ @ @ @ @.
−12,000 End of cave-painting period in Europe
−11,000; End of the last Ice Age, beginning of the geological Holocene Epoch @. Many animals such as the Columbian Mammoth, Woolly Mammoth, Mastodon, Woolly Rhinoceros, Saber Tooth Tiger, Dire Wolf, Irish Elk, Cave Bear, Cave Lion and Giant Hyena, became extinct during and at the close of the ice age. The Holocene also encompasses the growth and impact of the human species world-wide, including all its written history to the present.
−10,000 In most areas small composite flint tools — microliths and microburins are found. Fishing tackle, stone adzes and wooden objects, e.g. canoes and bows, have been found at some sites. These technologies first occur in Africa, associated with the Azilian cultures @, before spreading to Europe through the Ibero-Maurusian culture of Spain and Portugal, and the Kebaran culture of Palestine. Independent discovery is not always ruled out. Throughout this period humans were in the main nomadic hunter-gatherers forming small tribes.
−10,000 Harvesting of wild cereals in Levant and Syria by Natufian hunter-gatherers.
Ceramic Dogu clay figurines made in Japan@.
−9,000; Beginnings of cultivation of wild cereals in Syria; and management of wild sheep
and goats, Zagros Mts (Iraq-Iran border).
Human migrants reach the southern tip of S America.
This period is marked by monuments and other survivals and oral history written down in later ages. Recorded history begins when the participants begin writing down their thoughts.
−8,000Cultivation of barley, einkorn and emmer wheat in the Fertile Crescent
(Nile, Tigris and Euphrates river valleys) resulting in permanent farming settlements.
"Agricultural Revolution", so described by prehistorian Vere Gordon Childe @, begins in Middle East. Humans began the husbandry of animals such as sheep and goats and the cultivation of plants such as wheat and rice. This resulted in the setting up of fixed farms and settlements in fertile, well-irrigated areas, such as between the rivers Tigris and Euphrates, known as Mesopotamia, and in the Nile, Indus and Yellow River valleys. The cradles of early civilizations were river valleys, such as the Euphrates and Tigris valleys in Mesopotamia, the Nile valley in Egypt, the Indus valley in the Indian subcontinent, and the Yangtze and Yellow River valleys in China. Although attention has tended to concentrate on the Middle East's Fertile Crescent, archaeology in the Americas, East Asia and Southeast Asia indicates that agricultural systems, using different crops and animals, may in some cases have developed there nearly as early.
−8,000 Between 10,000 and 5,000 years ago humans in Europe and northern Africa domesticated cattle and began drinking cow's milk. According to genetic studies, people with a DNA sequence that helped them to digest milk had an advantage during times of famine, so more and more people in those regions inherited this trait. [source: AMNH]
−7,500 Flax used to make textiles in Middle East.
−7,500 - −6,500: Settlement of Catal Huyuk in Anatolia inhabited @.
−7,000; Beginning of domestication of goats, sheep and pigs, Middle East.
Playable crane-bone flutes of this date found at Jiahu in China in 1999 @.
−6,500 First major city develops around a spring at Jericho in the Jordan valley,
it is walled for protection and has population of around 2,500.
Rice cultivation begins in the Yangtse valley in China.
−6,200; Earliest evidence of copper smelting, Catal Huyuk, Turkey.
−6,000; Cattle domesticated in Middle East. Beginings of irrigation in foothills of the Zagros Mountains. Beginnings of farming in Egypt, India and SE Europe.
−5,500; Cotton cultivated in India.
−5,200; Chickens domesticated, Yellow River valley, China.
−5,000 Maize harvested in Mexico.
Civilisations develop in Fayoum and Nubia, Africa.
−5,000 - −4000 clay tablets used in Sumeria, Babylon, relief carving.
−4,500; Water buffalo domesticated, SE China.
Sail, Plough and Potter's wheel invented, Mesopotamia.
−4,300; Earliest megalithic structures, formed of large boulders set upright, built in W Europe.
Towns and cities, centred on temple complexes, begin to develop in Mesopotamia.
−4,000 Farming spreads to Britain and southern Scandinavia;
ice era conditions in northern Europe delayed the beginnings of agriculture
until much later than in southern climes.
First colonisation of the Pacific islands.
Horses domesticated, Ukraine.
Migration into North America from Siberia: Beringia
We continue this chronology in the section on Palaeohistory from −3,900