Skull of a Cave-Bear (Ursus Spelaeus) found in a cavern at Nabresina near Trieste and bearing on the right side in the parietal bone a Palaeolithic stone axe of the Mousterian type.

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Credit: Skull of a Cave-Bear (Ursus Spelaeus) found in a cavern at Nabresina near Trieste and bearing on the right side in the parietal bone a Palaeolithic stone axe of the Mousterian type. Wellcome Collection. Attribution 4.0 International (CC BY 4.0)