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When those sound waves hit your eardrum, it vibrates and that vibration is sent behind your eardrum to three tiny bones - the malleus, the incus and the stapes, the smallest bone in your body.

They might have this arrangement of their incus and malleus for reasons that are entirely different from those explaining the arrangement of these bones in multituberculates or euharamiyidans.

For instance, the keen hearing of mammals is partly down to tiny bones in the middle ear — the malleus, incus and ectotympanic.

But to Stankovic’s surprise, the broken bone wasn’t the malleus but another tiny one called the incus.

Exceptionally clearly developed single-cell Cumulonimbus incus displaying the classic anvil shape; gusts will happen near and under it.