Early modern human

We are all part of one big group.

Long ago, our kind lived in Africa. We look much like people do today.

Some old bones were found in Morocco. These bones are very old. Other bones were found in Ethiopia and South Africa.

These early people were very smart. They even made tools to hunt for food. We can learn so much from their story.

We are all part of a group called Homo sapiens. This name means "intelligent human."

Early humans lived in Africa a long time ago. Some fossils are very old. Bones found in Morocco are about 315,000 years old.

Other fossils were found in Ethiopia. They are about 233,000 years old. We also found a skull in South Africa. It is about 259,000 years old.

These early people looked a bit different. Some had thick brow ridges.

But their brain cases were round. This is like our own heads.

Early humans were very smart. They made tools to hunt big animals. They even used spears.

These humans lived near other groups. They mixed with them. This is called admixture. It means they had children together. This happened in Africa and Eurasia. This mixing helped shape our history. Scientists study these bones to learn how we grew.

We all belong to a group called Homo sapiens. This name was given by a scientist named Linnaeus in 1758. In Latin, the word homō means "human being." The word sapiēns means "wise" or "intelligent." So, our name basically means "intelligent human."

This name helps us stand out from other ancient human species. It is a way to identify our own specific lineage. Understanding our history helps us see how we became who we are today.

How did we become Homo sapiens? Scientists think we split from older ancestors a long time ago. One group of ancestors was called Homo erectus. This group lived from about 2,000,000 to 100,000 years ago. The split that led to our group likely happened in Africa. This may have occurred roughly 500,000 years ago.

Some scientists also look at when we split from Neanderthals. They estimate this happened between 503,000 and 800,000 years ago. This long history shows a slow change over many generations.

Finding old bones helps us learn about this time. The oldest remains of Homo sapiens were found at Jebel Irhoud in Morocco. These fossils are about 315,000 years old.

Other important fossils were found at Omo-Kibish in Ethiopia. These are dated between 233,000 and 196,000 years ago. We also found the Florisbad Skull in South Africa. That skull is about 259,000 years old. These sites show that our early relatives lived across much of Africa.

Early humans did not live alone. They often lived near other types of humans. For example, they lived near Neanderthals in places like Europe. Between 100,000 and 30,000 years ago, these groups had admixture. Admixture is when different groups mix and have children together. This mixing happened in both Africa and Eurasia. It helped shape the DNA of people living today. These events show how different human groups interacted.

Even though they were different, early humans were very capable. They used complex skills to survive. For instance, we found Schöningen spears that were used for hunting big animals. These tools show they had great technology 300,000 years ago. Some early humans had a mix of traits. They might have had thick brow ridges like older species. However, their brain cases were round like ours. This shows they were already developing the traits we recognize today.

Early modern humans, often called anatomically modern humans, are members of the species Homo sapiens. This term distinguishes our own lineage from extinct archaic human species. This distinction is vital for understanding periods where different human groups lived together. For example, in Paleolithic Europe, modern humans and archaic humans co-existed.

Today, Homo sapiens is the only surviving species of the Hominina group. Understanding these early humans helps scientists trace the complex history of our own biology.

The biological origins of Homo sapiens involve a long process of divergence. Scientists estimate the lineage leading to us split from ancestral Homo erectus roughly 500,000 years ago. This split likely occurred within the continent of Africa.

Some researchers use a cladistic definition to describe our species. This method defines Homo sapiens as the entire lineage following the split from Neanderthals. Under this definition, the age of our species could extend to over 500,000 years. Other estimates for the split from the Neanderthal and Denisovan lines range from 503,000 to over 800,000 years ago.

Finding fossils allows us to map the physical emergence of our species. The Jebel Irhoud site in Morocco provides some of the oldest known remains, dated to about 315,000 years ago.

In Ethiopia, the Omo-Kibish I site contains fossils dated between 233,000 and 196,000 years ago. South Africa also holds important evidence, such as the Florisbad Skull, which is approximately 259,000 years old. These sites demonstrate that early modern humans were present across various regions of Africa very early on. Some scientists suggest that modern humans may have emerged through the merging of populations in East and South Africa.

Early modern humans often displayed a mix of physical traits. Some fossils, like the Skhul V specimen from Israel, show both archaic and modern features.

Skhul V has a projecting face and prominent brow ridges, which are older traits. However, its brain case is rounded, similar to the skulls of people living today. This mix makes it difficult to define exactly when a human becomes "anatomically modern." This period, known as the Middle Paleolithic, lasted from the first emergence of Homo sapiens until about 50,000 years ago. During this time, humans were developing the unique physical characteristics we recognize today.

Evolutionary changes also involved significant shifts in biology and behavior. There was a notable connection between the development of the human brain and changes in the body. Specifically, an acceleration of metabolome evolution occurred alongside a drastic reduction in muscle strength. This rapid metabolic change in the brain and muscle may have helped develop unique cognitive skills. These skills are linked to a more "gracile," or lightly built, skeleton. Such physical changes might have supported increased cooperation and the ability to transport resources over distances.

Technological evidence shows that early humans were highly capable hunters. The Schöningen spears provide proof that complex technological skills existed as far back as 300,000 years ago. These tools serve as the first clear evidence of active big game hunting. Even older species, such as Homo heidelbergensis, likely possessed cognitive skills like anticipatory planning. This shows that the intellectual foundations for modern human behavior were being built long before the species fully emerged. This technological progression was essential for surviving in diverse environments.

Human history is also defined by the movement of people and the mixing of groups. This process is called admixture, which occurs when different human populations interbreed. Sustained admixture between modern and archaic humans happened in both Africa and Eurasia between 100,000 and 30,000 years ago. While some models once suggested a single source population, modern genetics shows a more complex picture. The "Out-of-Africa" expansion explains most of our ancestry, but it was supplemented by significant mixing with regional archaic humans. This complex web of movement and interaction shaped the genetic makeup of all modern humans.