【問題】what age was 50,000 years ago ？推薦回答
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Upper Paleolithic - Wikipedia。
The Upper Paleolithic (or Upper Palaeolithic) also called the Late Stone Age is the third ... Very broadly, it dates to between 50,000 and 12,000 years ago (the ...： 。
Middle Paleolithic - Wikipedia。
The Middle Paleolithic (or Middle Palaeolithic) is the second subdivision of the Paleolithic or Old Stone Age as it is understood in Europe, Africa and Asia ...： 。
How Old Is Language? | Psychology Today。
2015年2月19日 · Genetic evidence for early modern humans points to our species being around 200,000 years old. Moreover, from around 50,000 years ago—the ...： 。
Why did modern human populations disperse from Africa ca ... - PNAS。
2006年6月20日 · Clearly, the precise age of these inferred population expansions ... at ≈45,000–50,000 B.P., i.e., some 20,000 years later than their ...。
The Transition to Modern Behavior | Learn Science at Scitable - Nature。
Some see the development of modern behaviors as a late phenomenon, dating to 50,000 years ago, not related to the speciation of anatomically modern humans ( ...。
The Rand-McNally Bankers' Directory and List of Attorneys。
20,000 2,500 150,000 110,000 50,000 1st N. Bks . , St. P. and Min pls . Pop . 225 93-194 Bromberg ... Carbon I 16 Clarks Fork Valley Bk . 18.08 G. L. Ramsey ...。
The evolution of modern human brain shape - Science。
Hominin fossils from Jebel Irhoud (Morocco) that are associated with Middle Stone Age artifacts dated to around 300,000 years ago (17) display key features of ...。
The Settlement of the American Continents: A Multidisciplinary ...。
Green , T. J. , B. Cochran , T. W. Fenton , J. C. Woods , G. L. Titmus ... and K. Maasch 1993 A 50,000 Year Record of Climatic Oscillations from Florida and ...。
Untangling the Quaternary Period: A Legacy of Stephen C. Porter。
Kovanen, D.J., and Slaymaker, O., 2004a, Glacial imprints of the Okanogan lobe, ... INTCAL13 and MARINE13 radiocarbon age calibration curves, 0–50,000 years ...。
The Timberman。
Miller - Kinyon Shingle Co. , Sherwood , Wash .; capital stock , $ 7,500 . while but 33 years of age , was one of the most promising and progressive among ...