5o8 
THE ANTIQUITY OF MAN 
so to me — to suppose that the separation of the human 
from the great anthropoid stem dates back to at least the 
latter part of the Oligocene period (fig. 189). If we mean 
RECENT 
PALK-OPlTHECl/S 
GREAT 
ANTHROPOID 
STEM 
SMALL 
ANTHROPOID 
STEM 
PAIDOPITHEX. 
PITH£CANTH90PUS 
ORYOPITHECUS 
PLIOPITHECUS 
Fig. 188, — Genealogical tree, showing the lines of descent 
of the anthropoid apes, 
by the antiquity of man the period which has elapsed 
since the human stem became differentiated from that 
