As mammals evolved, these bones shifted location and function, becoming essential for transmitting sound vibrations from the eardrum to the inner ear. It’s a transformation almost too wild to believe, ...

The teeth of horses and zebras look alike. The ear bones of mammals were once the jaws of prehistoric reptiles. And so on. Despite these differences, all mammals share four traits that are shown ...

(Bottom) Mammals. The schematic on the left shows the eardrum forming between the first pharyngeal pouch and the ear canal. It is connected to the hammer bone (blue), which along with the anvil ...

The ear is a physically complex sense organ, especially in mammals. Because some of the ear’s structure involves bones, much of the evolution of the ear can be followed through the fossil record. The ...

"Modern mammals' bones migrated backward to become the small bones of the middle ear. That's why mammals hear so much better than reptiles." The separation of the jaw and the ear bones allowed the ...

New research suggests that land-based echidnas descended from semi-aquatic mammals. Gunjan Pandey CC ... Now, new analysis of a bone found three decades ago in Australia suggests that both animals ...

"Gorgonopsians are more closely related to mammals than they are to any other ... later developed into our characteristic mammalian ear bones. Their legs are also positioned more under their ...