FIGURE NO. 5 



INDICATION OF 



PEDIGREE OF 



ELEPHANTS, 



AS SHOWN IN A 



SERIES OF SKULLS 



NOT DRAWN TO SCALE 



(After Andrews and 

 Lull) 



I. Skull of Moerithe- 

 rium. Upper Eocene. II. 

 Palaeomastodon (length- 

 ening chin). Lower Oli- 

 gocene. III. Tetrabelo- 

 don (long chin). Lower 

 Miocene. IV. Tetrabelo- 

 don (shortening chin). 

 Upper Miocene. V. Ele- 

 phas (short chin). Upper 

 Pliocene to Recent. 



60 



