ECOLOGY AND BIOLOGY OF THE PACIFIC WALRUS 133 



Fig. 92. Absence of tusks in some adult male Pacific walruses. The left tusk of the larger 

 animal (right) had fractured at the gingival level; the right tusk had been shed. The 

 cause of loss of the left tusk from the smaller animal was not determined. (Photo by 

 F. H. Fay) 



Fig. 93. Tusk anomalies that resulted from infection of the pulp, associated with bullet 

 wounds: left, lateral view of the left maxillary area of an adult female, in which three of 

 the five separate tusks can be seen; pit (arrow) at dorsal end of the socket was the site of 

 the wound; and right, anterior aspect of the skull of an adult male, in which both tusks 

 had draining pulpal abscesses; original wound was at dorsal end of left socket. (Photos by 

 K. L. Austerman) 



