66 ANIMALS OF THE PAST 
whales, to whom a man would be but a 
mouthful, just enough to whet his sharkship’s 
appetite. Even granting that the rule of three 
unduly magnifies the dimensions of the brute, 
and making an ample reduction, there would 
still remain a fish between seventy-five and 
one hundred feet long, quite large enough to 
satisfy the most ambitious of twna fishers, and 
to have made bathing in the Miocene ocean 
unpopular. Contemporary with the great- 
toothed shark was another and closely related 
species that originated with him in Eocene 
times, and these two may possibly have had 
something to do with the extinction of Zeug- 
lodon. ‘This species is distinguished by hav- 
ing on either side of the base of the great tri- 
angular cutting teeth a little projection or 
cusp, like the “ear” on a jar, so that this spe- 
cies has been named awriculatus, or eared. 
The edges of the teeth are also more saw-like 
than in those of its greater relative, and as the 
species must have attained a length of fifty or 
sixty feet it may, with its better armature, 
have been quite as formidable. And, as per- 
haps the readers of these pages may know, the 
