Upper Paleolithic(redirected from 20th millennium BC)
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Pa•le•o•lith•ic(ˌpeɪ li əˈlɪθ ɪk; esp. Brit. ˌpæl i-)
(sometimes l.c.) of, designating, or characteristic of the early phase of the Stone Age: usu. divided into three periods (Lower Paleolithic, c2,000,000–c200,000 b.c., Middle Paleolithic, c150,000–c40,000 b.c., Upper Paleolithic, c40,000–c10,000 b.c.).
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|Noun||1.||Upper Paleolithic - the time period during which only modern Homo sapiens was known to have existed; ended about 10,000 years BC|