Annual report of the Board of Regents of the Smithsonian Institution . Neolithic level. Lower Magdalen-ian level. Solutr^an level. Aurianacian level. Mousterian level. Upper Acheulianlevel. Lower Acheulianlevel. Chellean level. Str^pyan level. Mesvinian level. Maflaean level. Fig. 20.—General section showing all the Quaternary deposits and the levels at whichindustrial remains are to be found when in exact stratigraphic position; based ondiscoveries made in Belgium and northern France. After Rutot, Bull. Soc. preh. deFrance, 1908. ANTIQUITY OF MAN IN EUEOPE MACCURDY. 581 tively from (1) valley


Annual report of the Board of Regents of the Smithsonian Institution . Neolithic level. Lower Magdalen-ian level. Solutr^an level. Aurianacian level. Mousterian level. Upper Acheulianlevel. Lower Acheulianlevel. Chellean level. Str^pyan level. Mesvinian level. Maflaean level. Fig. 20.—General section showing all the Quaternary deposits and the levels at whichindustrial remains are to be found when in exact stratigraphic position; based ondiscoveries made in Belgium and northern France. After Rutot, Bull. Soc. preh. deFrance, 1908. ANTIQUITY OF MAN IN EUEOPE MACCURDY. 581 tively from (1) valley deposits, (2) caverns and rock-shelters, and(3) human skeletal remains. The older paleolithic horizons, the Strepyan, Chellean, and Acheu-lian are to be found in valley deposits beginning with the middleQuaternary. The younger paleolithic horizons are quite generallythought of as being restricted to caverns and rock-shelters. Thanksto the results of recent researches, such a view is no longer a higher degree of precision and differentiation there is


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