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Fig. Sl.—Necrolemur antiquusYilh; a lemur from the Upper Eocene of Fraicp, 

 natural size. From Filliol, 



the Upper Neocene of ludia, but man does not appear 

 until the Plistocene in both America and Europe. The 

 exact stage of the Plistocene at which man's remains have 

 been found is not clearly ascertained, but he was contem- 

 porary with various extinct species and genera of Mam- 

 malia in both Europe and North and South America. The 

 time history of the Taxeopoda maybe expressed as follows : 



