The presence of three delicate bones in the middle ear that are completely separated from the lower jaw can be used to distinguish existing mammals from other vertebrates. This arrangement evolved ...
The fossil of a new Cretaceous mammal species found in Northeast China's Liaoning province. [Photo/cas.cn] BEIJING -- A new study shows that the middle ear structure of modern mammals began to evolve ...
As Stephen Jay Gould once put it, we have an earful of jaw. The small, sound-conducting bones of our inner ears – the incus, malleus, and stapes – got their start as jaw bones in our distant ancestors ...
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