BOS PRIMIGENIUS. 507 
Fossiles’ (1823), no authentic example had been recorded 
of a cranium of either Bison priscus or Bos primigenius 
in strata containing bones of the Mammoth and Rhino- 
ceros; and this statement is repeated in the, posthumous 
edition of the ‘Ossemens Fossiles,’ 8vo, 1835. The skull 
of the Aurochs in the Darmstadt collection, cited by M. 
v. Meyer, and the examples of the Bison priscus from 
newer pliocene freshwater deposits in Kent and Essex, 
described in the foregoing section, leave no reasonable 
doubt that a large Aurochs was the associate of the gi- 
gantic Pachyderms, whose representatives at the present 
day have the Buffaloes for their companions in the tropical 
swamps and forests. It is true that species of true os 
are found wild in the warmer parts of Asia; but no true 
Aurochs has been discovered within the tropics. That 
the great Aurochs was associated with a species of Bos 
of equal size in England during the newer pliocene period, 
is equally demonstrated by the fossils which form the sub- 
ject of the present sections. 
Fig. 210. 
Skull of great extinct Ox, Scotland. 
