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Section: Archaeology
Where has Homo Sapiens come from?

Where has Homo Sapiens come from?

We – people – are so different! Black, yellow and white, tall and short, dark-haired and fair-haired, brilliant and not very bright… Yet all of us – a blue-eyed Scandinavian giant, a dark-skinned pigmy from the Andaman Islands, and a tawny nomad from the African Sahara – belong to the same and sole mankind. And this is not a poetic figure of speech but a fact established by science and supported by the latest research in molecular biology. But where shall we look for the source of this many-faced living ocean? When, where and how did the first human being appear on the earth? Amazingly, even in our enlightened time, almost half citizens of the USA and a large share of Europeans vote for the divine origin, and many of the others believe in extraterrestrial interference, which, in fact, is not too different from the Divine Providence. However, even a firm advocate of evolution cannot give an unambiguous answer to this question

“A man has no reason to be ashamed of having an
ape for his grandfather. If there was an ancestor whom
I should feel shame in recalling it would rather be a man — a
man of restless and versatile intellect — who
not content with an equivocal success in his own sphere
of activity, plunges into scientific questions with which
he has no real acquaintance.”
Thomas Huxley (1869)

Not everybody knows that the non-Biblical version of human origin is rooted in the hazy 1600s, when the works of the Italian philosopher Lucilio Vanini and the English lord, barrister and theologian Mathew Hale, with the speaking titles On the Primitive Origin of Man (1615) and The Primitive Origin of Mankind, Considered and Examined According to the Light of Nature (1671), were published.

Numerous traces of the early man were discovered in Kazakhstan and Central Asia. In particular, on the dry eastern coast of the Caspian Sea, tens of thousands of primitive stone tools were found: in the Mugodzhar Hills alone (top), dozens of ancient hand axes – bifaces – can be collected on an area of one square meter

The baton passed by the philosophers who acknowledged the kinship of humans and apes was taken up in the 18th c. by the French diplomat B. de Mallier, and then by James Burnett, Lord Monboddo, who put forward the idea of the common descent of all the anthropoids, including man and chimpanzee. The French naturalist Georges-Louis Leclerc, Comte de Buffon, in his voluminous Histoire Naturelle, published a century before Ch. Darwin’s scientific bestseller The Descent of Man and Selection in Relation to Sex (1871), boldly asserted that man had originated from an ape.

In summary, by the late 19th century, the idea of man as a product of a long evolution of more primitive anthropoid beings had germinated and ripened. Moreover, in 1863 the German biologist and evolutionist Ernst Haeckel even classified the hypothetical being, the intermediate link between man and the ape, as Pithecanthropus alatus, i.e., an ape-human devoid of speech (from the Greek pinthecos, ape, and anthropos, man). Just one small thing was lacking – to discover this pithecantropos “in flesh,” which was done in the early 1890s by the Dutch anthropologist Eugene Dubois, who found the remains of a primitive hominin on the island of Java.

Unfailing outcrops of flint on the eastern Caspian coast were an attractive source of raw materials for making stone tools

Since that time, the planet Earth has been recognized as an official place of residence of the early man, and another issue, as topical and controversial as man’s descent from apelike ancestors, was placed on the agenda: geographical centers and development of anthropogenesis. Thanks to the amazing discoveries made in the recent decades by the cooperative efforts of archaeologists, anthropologists, and specialists in paleogenetics, the problem of the development of the modern human, like in the days of Darwin, has generated a lot of public interest and moved beyond mere scientific debates.

African cradle

The history of the search for the ancestral homeland of the modern human, a plot with many twists full of astonishing discoveries, looked at first like a list of anthropological findings. In the first place, natural scientists became interested in the Asian continent including Southeast Asia, where Dubois discovered the osseous remains of the first hominin, later called Homo erectus. Then, in the 1920s—1930s, archaeologists found numerous fragments of the skeletons of 44 individuals who lived in Zhoukoudian Cave in Northern China, Central Asia, 460,000—230,000 years ago. These people, referred as Sinanthropuses, were once considered the oldest link in human genealogy.

Gradually, however, Africa pretended to the title of “mankind’s cradle.” In 1925, in the Kalahari Desert, the fossil remains of a hominin called Australopithecus were discovered; in subsequent 80 years, hundreds of similar remains, aged from 1.5 to 7 million years, were found in the south and east of the continent.

In the history of science you can hardly find a more exciting and controversial problem that would stir up common interest than the problem of life origin and development of its intellectual peak – humanity

In the Great Rift Valley, running from the Dead Sea depression through the Red Sea and on through Ethiopia, Kenya and Tanzania, more ancient sites were discovered with stone artifacts of the Oldowan Industry (choppers, choppings, roughly retouched flakes, etc). Excavations in the basin of the Kada Gona river led to the discovery, under a layer of tuff 2.6 Ma old, of more than 3000 primitive stone tools made by the first representative of the Homo genus - Homo habilis.

Mankind has become much older – it became evident that at least 6—7 Ma ago the common evolution tree split into two separate branches: anthropoid apes and Australopithecus, and the latter marked the beginning of the new, “sensible,” development path. The world’s oldest fossil remains of modern people – Homo sapiens, who appeared about 200,000—150,000 years ago – were also discovered in Africa. In this way, by the 1990s, the Recent African origin model, supported by recent genetic studies of various human populations, became universally accepted.

However, in between the two extreme reference points – the most ancient ancestors of humans and modern mankind – there is at least six million years during which the man not only developed his present look but also occupied virtually the whole territory of the planet fit for living. If Homo sapiens first appeared only in the African part of the world, when and how did he settle on the other continents?

Three exoduses

About 1.8—2.0 Ma years ago, the ancient ancestor of modern humans – Homo erectus or close to it Homo ergaster – first left Africa and began his conquest of Eurasia. This was the beginning of the first Migration Period, a long gradual process that took hundreds of millenniums and which can be traced by the fossil remains and typical tools of ancient stone industry.

About two million years ago, Homo erectus left Africa and began to settle in Eurasia. It was the first wave of the oldest migrations of man

The first migration flow of the oldest populations of hominins branched into two main directions, northward and eastward. The former went through the Near East and Iranian Plateau towards the Caucasus (and, probably, Asia Minor) and on to Europe. This is evidenced by the oldest Paleolithic localities in Dmanisi, East Georgia, and Atapuerca, Spain, dated 1.7—1.6 and 1.2—1.1 Ma, respectively.

In the east, an early testimony of human presence is pebble tools dated 1.65—1.35 Ma, found in the caves of South Arabia. Further migration to the east took two paths: the northern way went to Central, and the southern way went to East and Southeast Asia across the territory of modern Pakistan and India. Judging by the dating of the deposits of quarzitic tools in Pakistan (1.9 Ma) and China (1.8—1.5 Ma) and of the anthropological findings in Indonesia (1.8—1.6 Ma), the early hominins settled on the expanses of South, Southeast and East Asia not later than 1.5 million years ago. On the border of Central and North Asia, in Altai, South Siberia, an early Paleolithic Karama site was discovered – its deposits contained four layers with an archaic pebble industry aged 800,000—600,000 years.

The ancient site of Karama in the Altai Mountains: primitive pebble tools discovered in multilayered Pleistocene sediments. Photograph by A. Postny and S. Zelenskiy

All the oldest sites of Eurasia left by the first wave migration had pebble tools characteristic of the most ancient Oldowan Industry. About the same time or a little later, representatives of other early hominines came from Africa to Eurasia. They were carriers of a microlithic stone industry, where small tools dominated, and they took virtually the same ways as their predecessors. These two oldest technologies of stone working played the key role in the development of ancient tool making.

The second global wave of African migration spread to Near East about 1.5 Ma ago. Who were these new migrants? Probably, Homo heidelbergensis – a new type of people that combined both Neanderthal and sapiental features. A distinguishing feature of “new Africans” was stone tools of Acheulean industry made using more advanced stone working technologies – the so-called Levallois technique of stone knapping and methods for bilateral working of stone on both sides. Moving to the east, this wave met the descendants of the first wave hominines, which involved a mix of the two industries, pebble tool and Late Acheulean.

So far, not many osseous remains of primitive humans have been found. The bulk of material accessible to archaeologists is stone tools. From them, they can trace how the stone working techniques improved and human intellectual abilities developed

Approximately 600,000 years ago, these migrants of African descent reached Europe, where the Neanderthals – the type closest to modern humans – later developed. About 450,000—350,000 years ago, the bearers of Acheulean tradition penetrated the east of Eurasia, reaching India and Central Mongolia but they did not go as far as the eastern and southeastern regions of Asia.

Left: the oldest tools – a massive pebble with a trimmed edge (the Oldowan industry) from the Karama site, Altai. In the middle: Samples of a microlithic industry aged 600,000—800,000 years, the Darvagchai river, Dagestan. On right: Stone tools of the more advanced Acheulian industry (bifically worked tools) from the Tsagan-Agui cave, Mongolia

The third exodus from Africa is related to the anatomically modern humans, who came to the evolutionary arena 200,000—150,000 years ago, as it was mentioned earlier. It is supposed that about 80,000—60,000 years ago, Homo sapiens, traditionally believed to be the bearer of Upper Paleolithic culture, began settling on other continents: first in the eastern part of Eurasia and Australia and then, in Central Asia and Europe.

Now we have approached the most dramatic and controversial part of our story. Genetic research has proved that all modern mankind descends from the same species of Homo sapiens, provided that mythical creatures like Yeti are disregarded. Then what happened to ancient human populations, descendants of the first and second migration waves from Africa, who lived in Eurasia for tens or even hundreds of thousands of years? Did they leave a trace in the evolutionary history of our species and if yes, how important was their contribution to modern humanity?

Depending on the answer to this question researchers can be divided in two groups, monocentrists and polycentrists.

Two models of anthropogenesis

In the end of the last century, the monocentric point of view on the appearance of Homo sapiens ultimately prevailed – the hypothesis of the African “exodus,” according to which the only ancestral home of Homo sapiens is the “black continent,” from where he settled all around the world. Basing on the results of the study of genetic variability of modern people, its advocates suppose that 80,000 – 60,000 years ago there was a demographic explosion in Africa, and as a result of a sharp growth in the population and lack of food, a new migration wave swept over Eurasia. Failing to withstand competition with a more evolutionarily advanced species, other hominines existing at that time, such as the Neanderthals, fell out of the evolutionary race some 30,000 – 25,000 years ago.

The second wave of the earliest migrants from Africa moved eastwards through the western regions of Asia. They are supposed to have taken two ways: one to the south of the Himalayas and Tibetan Plateau through Hindustan to East and Southeast Asia, and the other through the West Asian Uplands to Central and North Asia

Monocentrists have a variety of opinions on the progress of this process. Some believe that the new human populations exterminated or drove out the aboriginal populations to less comfortable regions, where their mortality grew, especially among children, and their birthrate dropped. Others do not rule out the possibility of occasionally long coexistence of the Neanderthals and modern humans (for example, in the southern Pyrenees), which could result in cultural diffusion and at times hybridization. According to the third point of view, acculturation and assimilation took place whereby the aboriginal population dissolved among the newcomers.

It is difficult to fully accept all these circumstances without convincing archaeological and anthropological evidence to support them. Even if we agree with the debatable presumption that the population grew very quickly, it is inexplicable why the migration flow did not spread initially across the nearby areas but went a long way off to the east, reaching Australia. As an aside comment, though Homo sapiens must have covered a distance of over 10,000 kilometers, so far no archaeological evidence has been discovered to prove it. Moreover, archaeological data suggest that in the period from 80,000 to 30,000 years ago no change occurred in the local stone industries of South, Southeast and East Asia, which should have happened in the event the newcomers actually replaced the aborigines.

This absence of “road” proofs has led to the version that Homo sapiens moved from Africa to the east of Asia along the sea coastline, which today is under the water together with all Paleolithic evidence. If this is true, however, African stone industry must have been almost the same on the islands of South-East Asia, while archaeological materials aged 60,000—30,000 years do not support this idea.

Today, the monocentric hypothesis has given no satisfactory answers to many other questions either. In particular, why did anatomically modern humans appear at least 150,000 years ago and the Upper Paleolithic culture, traditionally connected exclusively with Homo sapiens, almost 100,000 years later? Why this culture, which emerged virtually simultaneously in far-away regions of Eurasia, is not as homogenous as it should be expected in the case of a single carrier?

Left: the Tsagan-Agui cave in Gobi Altai is among the few well-dated Mongolian archaeological monuments; it contains the remains of the cultures of all Paleolithic stages and of later epochs. For 300,000 years, the unique Flint Valley in the desolate Gobi Desert served as a workshop for ancient stone craftsmen. There, at the outcrop of large siliceous breccias, there is a true “store field” of stone tools, over 20 square meters in area, where tens and hundreds of millions of tools are found – up to 600 per square meter!

These “dark spots” in man’s history may be accounted for by another, polycentric concept. According to this hypothesis of interregional human evolution, Homo sapiens could develop both in Africa and on the vast expanses of Eurasia, inhabited at that time by Homo erectus. It is the continuous development of the ancient population in each region that explains, in the polycentrists’ opinion, the striking difference between the Upper Paleolithic cultures of Africa, Europe, East Asia and Australia. Even though from the standpoint of up-to-date biology the formation of the same species (strictly speaking) in such different and geographically remote areas is unlikely, it is possible that independent, parallel evolution of the primitive man into Homo sapiens, with his developed material and spiritual culture, was taking place there.

Below we will provide some archaeological, anthropological and genetic evidence to prove this thesis, connected with the evolution of the primitive population of Eurasia.

Homo orientalis

Judging by the numerous archaeological findings, approximately 1.5 Ma ago stone industry in East and Southeast Asia took a development path that was entirely different from the rest of Eurasia and Africa. Surprisingly, during more than a million years, tool-making technology in the Chinese-Malaysian zone did not undergo any marked change. Furthermore, as it was mentioned above, in the period of 80,000—30,000 years ago, when anatomically modern humans should have appeared here, no radical innovations took place: neither new stone working technologies nor new types of tools emerged.

As for the anthropological evidence, most of the known skeleton remains of Homo erectus were found in China and Indonesia. Despite some differences, they make up quite a homogenous group. Of special interest is the volume of the brain of Homo erectus (1152—1123 cm3), found in the Yungxian District, China. Evidence of the advanced morphology and culture of these ancient people, who lived about a million years ago, is the stone tools discovered next to them.

The next link in the evolution of the Asian Homo erectus was found in Zhoukoudian caves, Northern China. This hominin similar to the Java pithecanthropus was classified in the Homo genus as a subspecies, Homo erectus pekinensis. Some anthropologists argue that all these remains of the earlier and more recent types of primitive people form a continuous evolutionary line extending almost up to Homo sapiens.

Thus, it can be taken for granted that over a span of more than a million years in East and Southeast Asia the Asian type of Homo erectus evolutionally developed independently from the rest of the world. This, however, does not rule out the possibility of migrations of small populations from the adjoining regions and, consequently, of genetic exchange. At the same time, the process of divergence that took place in these primitive humans themselves could have led to pronounced differences in morphology. An example is paleoanthropological discoveries from Java Island, which differ from the analogous Chinese findings of the same time: though Java hominin has preserved the primary features of Homo erectus, some characteristics of his were similar to these of Homo sapiens.

As a result, in the beginning of the Upper Pleistocene in East and Southeast Asia, on the basis of the local type of Homo erectus, a hominin anatomically close to a modern human formed. Supporting this view are the new datings of the Chinese paleoanthropological findings having the features of “sapiens,” according to which 100,000 years ago this region could have been inhabited by anatomically modern humans.

Neanderthals come back

The first representative of archaic people that became known to science is the Neanderthal, Homo neanderthalensis. The Neanderthals mostly lived in Europe but traces of their presence have also been discovered in Near East, West and Central Asia and in the south of Siberia. These short stumpy people, physically strong and well adapted to the severe conditions of the northern latitudes, in terms of the brain volume (1400 cm3) were on a par with modern humans.

In a century and a half that have passed since the first Neanderthals’ remains were discovered, hundreds of their sites, settlements and burial grounds have been studied. It has turned out that these archaic people not only made quite advanced tools but exhibited some aspects of behavior typical of Homo sapiens. For instance, the well-known archaeologist A. P. Okladnikov in 1949, in Teshik-Tash Cave (Uzbekistan) discovered the tomb of a Neanderthal with the traces of what was presumably a ritual burial.

Prior to the beginning of the 21st century, many anthropologists classified the Neanderthals as an ancestral form of modern humans; however, after mitochondrial DNA from their remains was examined, they were treated as a dead end. The Neanderthals were considered to have been forced out and replaced by modern humans of African descent. Further anthropological and genetic studies have shown, however, that the relations between the Neanderthals and Homo sapiens were not as simple as that. According to the latest evidence, up to 4 % of the modern humans’ (not Africans’) genome was borrowed from Homo neanderthalensis. Currently, there is no doubt that on the border of the areas populated by these humans not only cultural diffusion but also hybridization and assimilation took place.

Today, the Neanderthals are classified as a sister group of modern humans, and their status of “man’s ancestors” has been restored.

In the rest of Eurasia, the development of the Upper Paleolithic followed a different path. Let us trace this development through the example of Altai region, which has produced some astonishing results obtained with the help of the paleogenetic examination of the anthropological findings from Denisova and Okladnikov caves.

One more member for the club

As mentioned earlier, man first came to Altai not later than 800,000 years ago, during the first migration wave from Africa. The uppermost occupation layer of the Paleolithic site of Karama in the Anui River Valley (the oldest site in the Asian part of Russia) formed about 600,000 years ago, after which the development of Paleolithic culture in this area took a long break. About 280,000 years ago, carriers of more advanced stone working techniques came to Altai, and since then Paleolithic culture developed continuously.

The results of the study of the cranium and teeth from the Obi-Rakhmat Grotto have proved to be sensational: the Obi-Rakhmat hominin has revealed mixed Neanderthal and modern human features, and many of its morphological characteristics have no paleoanthropological analogs. Top: the reconstructed part of the cranium. A temporal bone fragment. Bottom: Tomography reconstruction of the periodic bone labyrinthine

In Obi-Rakhmat Cave, Uzbekistan, stone tools dating back to the turning point – the Middle Paleolithic to the Upper Paleolithic transition – were discovered. Moreover, the fossil remains found here give a rare chance to restore the habitat of the humans who carried out technological and cultural revolution

In the last twenty-five years, about 20 sites located in the caves and on the slopes of valleys in the Altai Mountains have been studied, and over 70 occupation layers of the Early, Middle and Upper Paleolithic have been examined. For example, in Denisova Cave alone 13 Paleolithic layers were distinguished. The oldest findings, dated the early period of Middle Paleolithic, were discovered in the layer aged from 282,000 to 170,000 years; Middle Paleolithic artifacts were found in the layer dating back to between 155,000 and 50,000 BP, and the Upper Paleolithic findings were dated to between 50,000 and 20,000 years ago. This long and “continuous” chronicle allows us to trace the changes that occurred in stone artifacts in many tens of thousands of years. It has turned out that it was a gradual process, a step-by-step evolution without any external “perturbations” – innovations.

Archaeological data testify that as early as 50,000—45,000 years ago Upper Paleolithic era began in Altai, and the sources of the Upper Paleolithic cultural traditions can be easily traced back to the final stage of Middle Paleolithic. Artifacts supporting this statement are miniature bone needles with drilled eyes, pendants, beads and other non-utilitarian things made of bone, ornamental stone and clamshell, as well as the truly remarkable finds: fragments of a bracelet and a stone ring with traces of grinding, polishing and drilling.

Regretfully, Altai Paleolithic localities cannot boast of many anthropological findings. The most impressive are the teeth and skeleton fragments from two caves, Okladnikov and Denisova, were studied in the Max Planck Institute for Evolutionary Anthropology (Leipzig, Germany) by an international team of genetic scientists led by Professor Svante Pääbo.

The cranium of a Neanderthal, Teshik-Tash, 1938. Archive of the Institute of History of Material Culture, Russian Academy of Sciences, St Petersburg

Paleogenetic studies confirmed that the remains discovered in Okladnikov Cave were Neanderthal whereas the results of the sequencing of mitochondrial and then nuclear DNA from the bone samples discovered in the occupation layer of the Upper Paleolithic early stage in Denisova Cave sprang a surprise on the researchers. The bone fragments proved to belong to a new fossil hominin, unknown to science, who was given the name of Homo sapiens altaiensis, or Denisovan, after the locality where he was discovered.

A boy from the Stone Age On that occasion, as always, Okladnikov was summoned.
— A bone.
He came up, bent over it and began brushing it carefully. And then his hand trembled. This was not just one bone, there were many of them. Fragments of a man’s skull. Heaven! Of a man! It was a find he had not dared to dream of.
Though could this person be buried here not long ago? It takes a few years for bones to decompose, and to expect that they will stay intact for dozens of millennia… Actually, it happens but very rarely. There is only a handful of such finds in the entire history of humankind.
But what if..?
— Verochka!
He called his wife below his breath.
She came up and bent over.
— This is a skull, she whispered. — Look, it’s crushed.
The cranium was lying with the crown down. It must have been crushed by a falling clot of earth. The skull was small! A boy’s or a girl’s.
With a spade and a brush, Okladnikov began widening the dig. The spade hit against something hard. A bone. Another one, and one more…It was a small skeleton, the skeleton of a child. An animal must have found its way into the cave and picked the bones. They were scattered, some of them gnawed and bitten.
But when did this child live? In what years, centuries, millennia? If he was a young master of the cave when people who worked stone lived here … The thought was terrifying. If it was so, the child was Neanderthal. A man who lived tens of thousands or even a hundred thousand years ago. He must have a very pronounced brow ridge and no chin.
The easiest thing to do was to turn the cranium to have a better look but this would have disrupted the excavation plan. They had to complete the excavations around it leaving the child’s bones untouched. The dig around them will deepen, and the bones will remain as though lying on a pedestal.
Okladnikov consulted Vera Dmitrievna, and she agreed with him....
... The child’s bones were left untouched. They were even covered. The archaeologists dug around them, and the bones were on a ground pedestal, which became higher every day. It appeared to be growing from the underground.
The night before that memorable day Okladnikov had trouble falling asleep. He was lying on his back, hands behind his head, looking up at the black southern sky. Far above, the stars were swarming. They were so many that it seemed there was not enough room for all of them. That faraway world inspired awe and at the same time instilled serenity. You felt like thinking of life, eternity, the faraway past and the faraway future.
What could the ancient man be thinking about when he was looking up at the sky? It was the same as it is now. Maybe, sometimes he also had trouble falling asleep, was lying in the cave and looking up at the sky. Did he only have memories or did he have dreams as well? What was that man? The stones told a story but there were many things about which they remained quiet.
Life buries its traces deep underground. Overlaying them are new traces, which with time also go down. And so it happens century after century, millennium after millennium. Life puts layers of its past in the ground. Paging through them, an archaeologist can learn about the doings of the people who used to live here and to determine, virtually without mistake, the times when they lived.
Drawing the curtain above the past, they removed land layer by layer, as time had put them.”
From the book Along the path of faraway millennia by Ye.I. Derevyanko and A.B. Zakstelsky

The genome of the Denisovans differs from the reference genome of a modern African by 11.7 %, and that of the Neanderthal from Vindija Cave, Croatia, by 12.2 %. This similarity testifies that the Neanderthals and Denisovans are sister groups with the same ancestor, who branched off the man’s mainstream evolutionary trunk. These two groups separated approximately 640,000 years ago, taking the path of independent development. Another proof is that the Neanderthals share some genetic variants with modern Eurasians whereas some of the Denisovans’ genetic material was borrowed by the Melanesians and indigenous inhabitants of Australia, who stand apart from other non-African human populations.

Left: a most rare find of Denisova Cave – a tooth of one of the first Asian Homo sapiens. On right: These unique artifacts of the Upper Paleolithic culture (a necklace, needles and a bracelet) testify that in Altai the Upper Paleolithic began earlier than in Europe

Judging by the archaeological data, 50,000—40,000 years ago, in the northwestern region of Altai two different groups of primitive people lived next to each other: the Denisovans and the easternmost population of the Neanderthals, who came there at about the same time, probably from the territory of modern Uzbekistan. The roots of the culture whose carriers were the Denisovans can be traced back to the earliest sequences of Denisova Cave, as it was mentioned earlier. Interestingly, according to the panoply of archaeological findings reflecting the development of the Upper Paleolithic culture, the Denisovans were not only on a par with the anatomically modern humans inhabiting at that time other territories but in some respects were superior to them.

To sum up, during the Late Pleistocene there were at least two other forms of hominines in Eurasia: Neanderthal in the western part of the continent and Denisovan in the eastern. Taking into consideration the gene drift from the Neanderthals to Eurasians and from the Denisovans to the Melanesians, we can take it that both these groups have contributed to the formation of anatomically modern humans.

Left: Denisova Cave is a dependable repository of the ancient history of Altai. Photograph by M. Shunkov. On right: Novosibirsk archaeologists have been excavating Pleistocene sediments in Denisova Cave, the Altai Mountains, where man first appeared about 300,000 years ago. The third upper molar, a wisdom tooth of a Denisovan, discovered in the lithologic layer 11 within the sediments dating back to 50,000-40,000 BP

Taking into account all the available archaeological, anthropological, and genetic materials from the oldest localities of Africa and Eurasia, it can be presumed that the globe had several areas where Homo erectus populations and stone working technologies developed independently. Respectively, each of these areas generated its own cultural traditions and its own models for the transition from the Middle Paleolithic to the Upper Paleolithic.

Thus, the basis of the evolutionary sequence crowned with the anatomically modern humans is the ancestral form of Homo erectus sensu lato*. Probably, in the Late Pleistocene it ultimately developed into the humans of the anatomically and genetically modern species Homo sapiens including four forms that can be referred to as Homo sapiens africaniensis (East and South Africa), Homo sapiens neanderthalensis (Europe), Homo sapiens orientalensis (Southeast and East Asia) and Homo sapiens altaiensis (North and Central Asia). In all likelihood, the idea to unite all these primitive people into a single species, Homo sapiens, can give rise to doubt and objections but it has to be remembered that it is based on a large body of analytical information, only a small part of which was given in this paper.

In archaeology everything matters down to the last detail. Chief of the Laboratory of Mammals, Prof. A. K. Agadzhanyan (the Paleontological Institute, Russian Academy of Sciences, Moscow) and his assistant are examining the cave ground on the bank of the Anui River. Photograph by S. Zelenskiy

Evidently, not all of these subspecies have contributed equally to the formation of anatomically modern humans: Homo sapiens africaniensis featured the greatest genetic diversity, and it was he who laid the foundation for the modern human. However, the most recent data of paleogenetc research dealing with the presence of Neanderthal and Denisovan genes in the gene pool of modern mankind have shown that the other groups of ancient people did not stand back either.

Currently, archaeologists, anthropologists, experts in genetics and other specialists interested in human origin have accumulated an enormous number of new data basing on which new hypotheses, sometimes diametrically opposite, can be formulated. It is high time to discuss them in detail under the essential condition that man’s origin is a multidisciplinary problem and new ideas should be based on a complex study of the results obtained by the specialists of a wide variety of sciences. Only this way will ultimately give us the answer to one of the most controversial questions that has stirred people for centuries – the development of intelligence. According to Thomas Huxley quoted above, “each of our firmest convictions can be overthrown or, at least, revised by further successes in knowledge.”

* Homo erectus sensu lato – Homo erectus in a general sense


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