Our first tangible evidences of mythological thinking are from the period of Neanderthal Man,

Our first tangible evidences of mythological thinking are from the period of Neanderthal Man, which endured from ca. 250,000 to ca. 50,000 B.C.; and these comprise, first, burials with food supplies, grave gear, tools, sacrificed animals, and the like; and second, a number of chapels in high-mountain caves, where cave-bear skulls, ceremonially disposed in symbolic settings, have been preserved.

-- Joseph Campbell
(ep 3)
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