Shuyu 3D Braincase

419 million year old Chinese fossils show human middle ear evolved from fish gills

The 3D brain envelope of Shuyu. Credit: IVPP The human middle ear – which holds three small, vibrating bones – is the key to transporting sound vibrations into the inner ear, where they become nerve impulses that allow us to hear. Embryonic and fossil evidence proves that the human middle ear evolved from the spirals …

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