Hominidae

Great apes are a big family.

They include humans and many other apes. There are eight kinds of these apes alive today.

Some apes live in trees. Others live on the ground.

Gorillas are the largest of the group.

Most of these apes eat many things. Some like to eat fruit. Gorillas will eat leaves if they must.

These animals use their hands well. They can pick up food. Some can even use tools.

Humans and apes are very close kin.

We share much of the same history.

The Hominidae are a family of primates called the great apes.

There are eight species alive today. These include orangutans, gorillas, chimpanzees, bonobos, and humans.

Orangutans, gorillas, and chimpanzees are very close to humans. In fact, human DNA is about 98.4% the same as chimpanzee DNA. This shows we share a common history. Long ago, these groups split apart. About 12 million years ago, orangutans split from the others. Later, gorillas and chimpanzees split from the line leading to humans.

Great apes are tailless. They are good at using their hands. They can pick up food or use tools. Most apes eat many kinds of food. Chimpanzees and orangutans mostly eat fruit. Gorillas eat fruit too, but they also eat leaves and bamboo.

Scientists study fossils to learn about our past. Fossils are the remains of animals from long ago.

These old bones help us see how our family changed over millions of years.

The Hominidae are a family of primates known as the great apes.

This group includes eight living species across four different groups. You will find orangutans, gorillas, chimpanzees, bonobos, and humans in this family. These animals are all closely related to one another. They share many physical traits that set them apart from other primates.

Understanding this family helps us learn about our own history.

Scientists study how these groups changed over a very long time. This way of looking at history is called evolution. About 14 million years ago, the first common ancestor lived. Later, the orangutan group split away from the other three. About 12 million years ago, the other great apes changed further. Gorillas split off first, and then chimpanzees split from the human line.

This long chain of changes created the different apes we see today.

Learning about these animals can be hard because of how names change. In the past, scientists used the word "hominid" only for humans. Now, the word "hominid" includes all the great apes. There are even more specific names like "hominin" for humans and chimpanzees. These names help scientists organize the different branches of the family tree. Even though the names change, the goal is to show how we are related.

Scientists use these labels to keep their research organized.

Many important facts come from looking at very old bones. These are called fossils, and they tell us about extinct species. Some famous fossils include those of the australopithecines or the genus Ardipithecus. In East Africa, fossils like Sahelanthropus tchadensis are very old. Scientists also look at DNA to see how close species are. For example, human DNA is about 98.4% identical to chimpanzee DNA. This tiny difference shows just how much we have in common.

Great apes have unique ways of living and moving. Most of them move on all fours, but they can use their hands. They use their hands to gather food or even use tools. Most great apes are omnivores, which means they eat both plants and animals. Chimpanzees and orangutans mostly eat fruit to stay healthy. Gorillas also love fruit, but they can eat leaves and bamboo too.

Even though they are different, these animals share a wonderful world with us.

The Hominidae are a taxonomic family of primates known as the great apes. This group is essential for understanding the biological history of primates and our own place in nature. Today, the family includes eight extant, or living, species divided into four distinct genera. These include the orangutans of the genus Pongo, the gorillas of the genus Gorilla, the chimpanzees and bonobos of the genus Pan, and humans of the genus Homo.

Because these animals share a close genetic relationship, they are studied intensely to map the branches of the primate family tree.

Understanding the classification of these animals requires navigating complex scientific terminology. In the past, the term "hominid" was used strictly to describe humans and their extinct relatives. However, modern biology has revised these groupings to reflect true evolutionary relationships. Today, "hominid" refers to all great apes, including orangutans. Within this family, the subfamily Homininae includes gorillas, chimpanzees, and humans. The subfamily Ponginae is reserved for orangutans.

Scientists also use the term "hominin" to describe the group containing humans and chimpanzees, or more specifically, those more closely related to humans than to chimpanzees.

The evolutionary history of the Hominidae spans millions of years. Molecular evidence suggests that the lineage of the "lesser apes," known as gibbons, diverged from the great apes roughly 18 to 12 million years ago. The orangutan lineage, or the subfamily Ponginae, split from the other great apes about 12 million years ago.

The most recent common ancestor of all Hominidae lived approximately 14 million years ago. Following this, the ancestors of gorillas and chimpanzees split from the line leading to humans between 8 and 4 million years ago. Specifically, the gorilla genus split off first, followed by the chimpanzee genus.

Fossil evidence provides a window into these ancient transitions, though the record is often incomplete. In East Africa, researchers have found fossils like Sahelanthropus tchadensis, dated to 7 million years ago, and Orrorin tugenensis, dated to 6 million years ago. Other important groups include the Ardipithecus and the australopithecines.

Finding these fossils is difficult because rainforest soils are often acidic. This acidity can dissolve bones before they can become fossils. Despite these challenges, the DNA of modern humans is approximately 98.4% identical to that of chimpanzees, confirming our very close biological connection.

Physical characteristics vary significantly across the different genera of the Hominidae. All great apes are tailless primates, but they differ greatly in size. The bonobo is the smallest living species, while the eastern gorilla is the largest. In most species, males are larger and stronger than females, a trait known as sexual dimorphism.

Human teeth and jaws are notably smaller relative to body size than those of other apes. This may be an adaptation to using tools or eating cooked food since the end of the Pleistocene epoch.

Behavioral patterns also define how these primates interact with their environments. Most species are predominantly quadrupedal, meaning they move on all fours, but they can all use their hands for gathering or nesting. Many build complex sleeping platforms in trees, though chimpanzees and gorillas also build nests on the ground. All great apes are omnivores, meaning they eat both plants and animals. While chimpanzees and orangutans primarily eat fruit, gorillas can eat shoots and bamboo when fruit is scarce.

These biological and behavioral studies have significant real-world implications. Because of the close genetic ties between humans and other great apes, organizations like the Great Ape Project argue that nonhuman great apes should be considered "persons" with basic rights. This debate has led to practical changes in how science is conducted. Currently, twenty-nine countries have instituted bans on scientific testing to protect great apes. This intersection of biology, ethics, and law shows how studying the Hominidae affects the world today.