THE TRACHODON GROUP De 
ew 
Trachodonts were strictly herbivorous creatures. The mouth was 
expanded to form a broad duck-like bill, which during life was covered 
with a horny sheath, as in birds and turtles. Each jaw is provided with 
from 45 to 60 vertical and from 10 to 14 horizontal rows of teeth, so that 
there were more than 2,000 teeth all together in both jaws. 
TRACHODON. 
Side view of the erect specimen. 
Among living saurians, or reptiles, the small South American iguana, 
Amblyrhynchus, may be compared in some respects with the ‘Trachodons, 
in spite of wide difference in size. ‘These modern saurians live in great 
numbers on the shores of the Galapagos Islands off the coast of Chile. 
‘They swim out to sea in shoals and feed exclusively on sea-weed which 
grows on the bottom at some distance from shore. ‘The animal swims 
