





$mr 



RECENT Si 

 PLEISTOCENE 

 "r.OOO ft 



200,000 years 



PLIOCENE 

 5.000 ft 



250,000 years 



MIOCENE 

 9,000 ft < 



900,000 years 



OLKjOCENE 

 12.000 ft 



l,200,ooo years 1 



EOCENE 

 12.ooo ft 



1,200,000 years 



Aw 



' 1 /s 



■MODERN MAN 

 -PILTD0WN MAN 

 -NEANDERTHAL MAN 



-PITHECANTHROPUS 



AN OFFSHOOT 

 FROM LARGE APCS 

 A PRIMITIVE 

 SIAMANG 



.A PRIMITIVE 

 GIBBON 



A PRIMITIVE 

 LARGE APE 



/COMMON STEM 

 '•' OF LARGE APES 

 '••AND MAN 



/COMMON STEM 

 '\ OF SMALL APES 



STEM OF NEW 

 \ WORLD MONKEVS 



/COMMON 

 • STEM OF 

 V. PRIMATES 



FIGURE NO. 24 



MAN'S GENEALOGICAL TREE 



(By kind permission of Sir Arthur Keith and Messrs. Williams & 



Nor gate, publishers) 



From a generalized "Primate" stem there were separated off 

 first, the New World Monkeys ; second, the Old World Monkeys ; 

 third, the smaller Anthropoid Apes ; fourth, the larger Anthropoid 

 Apes. From a generalized Humanoid stem there were separated 

 off various 'tentative men/ like Pithecanthropus. From the stem 

 of Homo there was separated Neanderthal man (Homo neander- 

 thalensis) ; the line is continued by Homo sapiens. The estimates 

 for the duration of Eocene, Oligocene, etc., are of course approxi- 

 mate and subject to criticism. 



208 



