ECOLOGY AND BIOLOGY OF THE PACIFIC WALRUS 101 



Fig. 67. Appearance of the lingual facets on the cheek teeth of two adult female walruses, 

 in relation to the surrounding gingiva: upper, ventroanterior view into the open mouth, 

 in which the oblique lingual facets of the upper teeth are nearly flush with the gingiva; 

 lower, anteromedial view of the right cheek teeth, showing the polished lingual facets on 

 all of the teeth. The pitted occlusal facets also are visible. (Photos by G. C. Kelley) 



