What are Homo sapiens?

Homo sapiens , meaning "wise man" in Latin, is the species to which all modern human beings belong. Homo sapiens is the only surviving species of the genus Homo . Until recently, it was thought that H. sapiens evolved approximately 200,000 years ago in East Africa. However, a multiyear excavation revealed that H. sapiens was present at Jebel Irhoud, Morocco, roughly 315,000 years ago. H. sapiens is now located in virtually every habitable region of Earth, yet it still bears the hallmarks of its origin as a tiny population inhabiting one small corner of the world.

What does it mean to be a hominin?

A hominin is any member of the zoological "tribe" Hominini, of which the only existing species today is Homo sapiens , or human beings. The term often refers to extinct members of the human lineage like H. neanderthalensis , H. erectus , H. habilis , and various Australopithecus species. Hominins are characterized by traits that distinguish them from other primates, living and extinct, such as erect posture and bipedal locomotion , larger brains, and behavioral characteristics including specialized tool use and communication through language.

How are Homo sapiens different from other hominins?

Homo sapiens , or modern humans, are characterized by several key differences from other hominins. These include a relatively lightly built skeleton, a high and rounded cranium with thin bones, and a reduced face without large air sinuses. The brow ridges are small and uniquely divided, and the lower jaw features a complex chin structure not found in other hominins. Additionally, Homo sapiens exhibit a distinct pattern in the use of space, with designated areas for toolmaking, cooking, and sleeping. Symbolic thinking is also a hallmark, with early evidence found in Africa, such as engraved ochre plaques and adorned shells. The advent of language is considered a pivotal cultural release mechanism, enabling complex symbolic activity and innovation. While anatomical modernity appears to have come first, the capacity for symbolic reasoning and radically new behavioral abilities emerged somewhat later in time.

Where and when did Homo sapiens first appear?

Homo sapiens emerged between 315,000 and 150,000 years ago. The oldest known remains of H. sapiens were discovered at Jebel Irhoud, Morocco, and date back approximately 315,000 years. This suggests that H. sapiens may have emerged in North Africa, not just East Africa. Fossil specimens from the Omo site in Ethiopia, dated to 195,000 years ago, confirm the presence of anatomically modern H. sapiens in eastern Africa around 200,000 years ago. Molecular genetic data indicates that early H. sapiens experienced a population bottleneck before rapidly spreading throughout the Old World.

What are some important characteristics of Homo sapiens?

Homo sapiens , the species of all modern humans, is the only surviving species of the genus Homo . The name was given in 1758 by Carolus Linnaeus , the father of modern biological classification. Defining characteristics include a lightly built skeleton, a high, rounded cranium, a reduced face not expanded by large air sinuses, small brow ridges divided into distinct halves, and a complex chin structure. The average brain mass of H. sapiens is 1,350 grams. H. sapiens originated in Africa around 315,000 years ago. Molecular data suggest that early H. sapiens experienced a population bottleneck before spreading throughout the Old World, migrating to southern China between 120,000 and 80,000 years ago and to Europe around 45,000 years ago.

How did Homo sapiens interact with other hominin species like Neanderthals?

Homo sapiens interacted with other hominin species, such as Neanderthals, in various ways. The oldest fossil evidence of Neanderthals and modern humans in the same location is a human skull found in Israel, dating back 55,000 years, which suggests they may have encountered each other around that time. Genetic studies show that Homo sapiens and Neanderthals share 99.5% of their genome sequence identity. Neanderthals and modern humans from Eurasia interbred on several occasions. As a result, modern humans with Eurasian ancestry share 1–4% of their DNA with Neanderthals. Some of the genes shared between the two species are related to immune response. Though the exact nature of their coexistence remains unknown, one theory suggests that Neanderthals, adapted to colder climates, may have retreated from certain areas during warmer periods, allowing Homo sapiens to move northward, and vice versa during colder times.

Homo sapiens

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Images & Videos

Map of Africa, Europe, and Asia showing fossil sites of Homo heidelbergensis (marked with yellow triangles) and Homo sapiens, including Cro-Magnon (marked with green circles). The map highlights key archaeological locations across these continents, with an inset providing additional detail for fossil sites in Western Europe.

Hear a discussion about the uniqueness in humans which separates them from other animals

A diagram showing the tentative evolutionary relationships among hominid species over the past four million years, with skull images and labeled species names connected by solid and dotted lines to indicate proposed evolutionary pathways.

How evolution reveals the differences between humans and apes

Replica of a Kenyanthropus platyops skull

Chart displaying the ages and locations of major Homo sapiens and related fossil finds across Africa, Europe, and Asia-Pacific, with colored bars representing the time spans of each archaeological site over the past 600,000 years.

A timeline chart displays major fossil discoveries linked to Homo habilis from 1960 to 2000, with illustrations and brief descriptions of each find, including partial skeletons, skulls, jaws, and leg bones, along with locations, estimated ages, and discoverers.

Diagram showing the increase in hominid cranial capacity over time with illustrations of skulls from various species, including Australopithecus, Homo habilis, Homo erectus, Homo heidelbergensis, Homo neanderthalensis, and Homo sapiens, arranged along a timeline and brain volume scale for comparison.

At a Glance

Homo sapiens summary

Homo sapiens

hominin

Written by

Ian Tattersall

Fact-checked by

Britannica Editors

Last updated

Sep. 26, 2026 •History

Top Questions

What are Homo sapiens?
Homo sapiens, meaning "wise man" in Latin, is the species to which all modern human beings belong. Homo sapiens is the only surviving species of the genus Homo.

Until recently, it was thought that H. sapiens evolved approximately 200,000 years ago in East Africa. However, a multiyear excavation revealed that H. sapiens was present at Jebel Irhoud, Morocco, roughly 315,000 years ago.

H. sapiens is now located in virtually every habitable region of Earth, yet it still bears the hallmarks of its origin as a tiny population inhabiting one small corner of the world.
4 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
What does it mean to be a hominin?
A hominin is any member of the zoological "tribe" Hominini, of which the only existing species today is Homo sapiens, or human beings. The term often refers to extinct members of the human lineage like H. neanderthalensis, H. erectus, H. habilis, and various Australopithecus species.

Hominins are characterized by traits that distinguish them from other primates, living and extinct, such as erect posture and bipedal locomotion, larger brains, and behavioral characteristics including specialized tool use and communication through language.
3 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
How are Homo sapiens different from other hominins?
Homo sapiens, or modern humans, are characterized by several key differences from other hominins. These include a relatively lightly built skeleton, a high and rounded cranium with thin bones, and a reduced face without large air sinuses. The brow ridges are small and uniquely divided, and the lower jaw features a complex chin structure not found in other hominins.

Additionally, Homo sapiens exhibit a distinct pattern in the use of space, with designated areas for toolmaking, cooking, and sleeping. Symbolic thinking is also a hallmark, with early evidence found in Africa, such as engraved ochre plaques and adorned shells. The advent of language is considered a pivotal cultural release mechanism, enabling complex symbolic activity and innovation.

While anatomical modernity appears to have come first, the capacity for symbolic reasoning and radically new behavioral abilities emerged somewhat later in time.
4 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Where and when did Homo sapiens first appear?
Homo sapiens emerged between 315,000 and 150,000 years ago. The oldest known remains of H. sapiens were discovered at Jebel Irhoud, Morocco, and date back approximately 315,000 years. This suggests that H. sapiens may have emerged in North Africa, not just East Africa. Fossil specimens from the Omo site in Ethiopia, dated to 195,000 years ago, confirm the presence of anatomically modern H. sapiens in eastern Africa around 200,000 years ago. Molecular genetic data indicates that early H. sapiens experienced a population bottleneck before rapidly spreading throughout the Old World.
5 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
What are some important characteristics of Homo sapiens?
Homo sapiens, the species of all modern humans, is the only surviving species of the genus Homo. The name was given in 1758 by Carolus Linnaeus, the father of modern biological classification.

Defining characteristics include a lightly built skeleton, a high, rounded cranium, a reduced face not expanded by large air sinuses, small brow ridges divided into distinct halves, and a complex chin structure. The average brain mass of H. sapiens is 1,350 grams.

H. sapiens originated in Africa around 315,000 years ago. Molecular data suggest that early H. sapiens experienced a population bottleneck before spreading throughout the Old World, migrating to southern China between 120,000 and 80,000 years ago and to Europe around 45,000 years ago.
3 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
How did Homo sapiens interact with other hominin species like Neanderthals?
Homo sapiens interacted with other hominin species, such as Neanderthals, in various ways. The oldest fossil evidence of Neanderthals and modern humans in the same location is a human skull found in Israel, dating back 55,000 years, which suggests they may have encountered each other around that time.

Genetic studies show that Homo sapiens and Neanderthals share 99.5% of their genome sequence identity. Neanderthals and modern humans from Eurasia interbred on several occasions. As a result, modern humans with Eurasian ancestry share 1–4% of their DNA with Neanderthals. Some of the genes shared between the two species are related to immune response.

Though the exact nature of their coexistence remains unknown, one theory suggests that Neanderthals, adapted to colder climates, may have retreated from certain areas during warmer periods, allowing Homo sapiens to move northward, and vice versa during colder times.
4 Britannica Sources
Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Homo sapiens, the species to which all modern human beings belong. Homo sapiens is one of several species grouped into the genus Homo, but it is the only one that is not extinct. See also human evolution.

The name Homo sapiens was applied in 1758 by the father of modern biological classification (see taxonomy), Carolus Linnaeus. It had long been known that human beings physically resemble the primates more closely than any other known living organisms, but at the time it was a daring act to classify human beings within the same framework used for the rest of nature. Linnaeus, concerned exclusively with similarities in bodily structure, faced only the problem of distinguishing H. sapiens from apes (gorillas, chimpanzees, orangutans, and gibbons), which differ from humans in numerous bodily as well as cognitive features. (Charles Darwin’s treatise on evolution, On the Origin of Species, would come 101 years later.)

(Read Ray Kurzweil’sBritannica essay on the future of “Nonbiological Man.”)

Since Linnaeus’s time, a large fossil record has been discovered. This record contains numerous extinct species that are much more closely related to humans than to today’s apes and that were presumably more similar to H. sapiens behaviorally as well. Following the ancestors of modern human beings into the distant past raises the question of what is meant by the word human. H. sapiens is human by definition, whereas apes are not. But what of the extinct members of the human tribe (Hominini), who were clearly not H. sapiens but were nonetheless very much like them? There is no definitive answer to this question. Although human evolution can be said to involve all those species more closely related to H. sapiens than to the apes, the adjective human is usually applied only to H. sapiens and other members of the genus Homo (e.g., H. erectus, H. habilis). Behaviorally, only H. sapiens can be said to be “fully human,” but even the definition of H. sapiens is a matter of active debate. Some paleoanthropologists extend the span of this species far back into time to include many anatomically distinctive fossils that others prefer to allocate to several different extinct species. In contrast, a majority of paleoanthropologists, wishing to bring the study of hominins into line with that of other mammals, prefer to assign to H. sapiens only those fossil forms that fall within the anatomic spectrum of the species as it exists today. In this sense, H. sapiens is very recent, having originated in Africa more than 315,000 years ago (315 kya).

(Read Yuval Noah Harari’s Britannica essay on the future of “Nonconscious Man.”)

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Evolution

Before about 1980 it was widely thought that distinctively hominin fossils could be identified from 14 to 12 million years ago (mya). However, during the 1970s geneticists introduced the use of molecular clocks to calculate how long species had been separated from a common ancestor. The molecular clock concept is based on an assumed regularity in the accumulation of tiny changes in the genetic codes of humans and other organisms. Use of this concept, together with a reanalysis of the fossil record, moved the estimated time of the evolutionary split between apes and human ancestors forward to as recently as about 5 mya. Since then the molecular data emerging from DNA sequencing and a steady trickle of new hominin fossil finds have pushed the earliest putative hominin ancestry back in time somewhat, to perhaps 8–6 mya.

Homo sapiens

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Evolution