An introduction to the study of social evolution; the prehistoric period . Prom Forrer, Urgeschiclite des Europaers. FiGUKE 28. Flint Implements of the Chellean Epoch. were large, the kind that would go with an immenselypowerful jaw, needing a massive brow-ridge to counter-act the strain of the bite—in general the Neanderthaltjrpe, large brained perhaps, yet quite ape-like. Thediners had also left their knives about,—^flint implementschipped only on one side.^^ The chipped flint implements of prehistoric man differin such a way that we are able to recognize several stages 31 Marett, R. R.—Anth
An introduction to the study of social evolution; the prehistoric period . Prom Forrer, Urgeschiclite des Europaers. FiGUKE 28. Flint Implements of the Chellean Epoch. were large, the kind that would go with an immenselypowerful jaw, needing a massive brow-ridge to counter-act the strain of the bite—in general the Neanderthaltjrpe, large brained perhaps, yet quite ape-like. Thediners had also left their knives about,—^flint implementschipped only on one side.^^ The chipped flint implements of prehistoric man differin such a way that we are able to recognize several stages 31 Marett, R. R.—Anthropology, in The Home University Library, & Co., 1912, p. 37. THE ORIGIN AND ANTIQUITY OF MAN 75 in their development and even to assign the approxi-mate years during which each was in vogue. Tlie rouoh. Prom Eirkner. Der Dilnviale Mensch in Earopa. FiouBE 29. Flint Implements of the Acheulian Epoch. stone age and the polished stone age are the popularterms for the stages showing the most striking differencesin appearance and workmanship. In figure 14 themost recent geologic epoch, the Quaternary, is dividedinto the lower, middle, and upper Quaternary, coveringa period of some 750,000 years. It will be noticed that 76 SOCIAL EVOLUTION in the fourth, and fifth columns of the diagram there isa somewhat corresponding division, only under the morescientific name of the Eolithic period, the Lower Pale-olithic period, the Upper Paleolithic period, and theNeolithic period. Keane associates the Paleolithic, orrough stone age, with the glacial period in Europe, andthe Neolithic, or polished stone age, with the period sincethe ice ages.^^ The Upper and Lower Paleolithic periods are different in that the lower period is characterized by the evolutionof the almond-shaped (amygdaloid) implement wh
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