A CHAPTER OF CONCLUSIONS 509 
oS^T^f^" 
RECENT & 
PLEISTOCENE 
-+,000 -pt 
-400,000 years 
PLIOCENE 
5,000 ft 
500,000 years 
MIOCENE 
9,000 ft < 
900,000 years . 
MODERN MAN 
EOANTHROPUS 
NEANDERTHAL 
PITHECANTHROPUS 
PAL^OPI THECUS 
PAIOOPITHBX 
PLIOPITHECUS 
DRYOPITHECUS 
OLIGOCENE 
12/JOO f ^ 
L2 00,000 years 
■ GREAT 
ORTHOGRADE 
•. PRIMATES 
. SMALL 
ORTHOGRADE 
\ PRIMATES 
PROPUOPI THECUS 
STEM OF 
NEW WORLD 
MONKEYS 
EOCENE 
12.000 -F? 
1,200.000 years \ 
Fig. 189.— Genealogical tree, showing the ancestral stems and probable lines of 
descent of the higher primates. 
