The evolution of the vestibular apparatus in apes and humans, Humans, gorillas, chimpanzees, orangutans, and gibbons belong to a group known as hominoids.

This “super family” also includes direct ancestors and close relatives of this species, but in many cases the evolutionary relationship between these extinct ape species is still controversial.

While DNA evolutionary biologists can help determine how living species are interrelated, fossils are usually the main source of information about extinct species.

Fossil fossil compounds must be obtained with caution, but the cavities in which the inner ear, which is involved in balance and hearing, and which are common in the fossil record, have proven useful in tracking the evolution of certain groups of mammals. The evolution of the vestibular apparatus in apes and humans.

However, so far, no one has seen whether this structure can provide a picture of the evolutionary connection between living and extinct hominoids.

Urciuoli et al. They have now used 3D imaging techniques to capture the complex form of cavities in the ears of 27 species of monkeys and monkeys, including humans and two extinct monkeys (Oreopithecus and Australopithecus).

The results confirm that this structural form most closely reflects the evolutionary relationship between species and not how animals move. The evolution of the vestibular apparatus in apes and humans.

For example, the results for Australopithecus are consistent with the fact that it is more closely related to modern humans than other monkeys, while the mysterious Oeopithecus supports the view that some far older monkey species meet other apes. which is still alive today.

The results underline the potential of the inner ear to reconstruct the early branches of our family tree.

They also offer a perspective to perfect the contradictory evolutionary relationship in various extinct monkey species.