U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. 83^ PLATE 24 



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Plesippus shoshonensis. 

 Skull and inundible, type specimen, U.S.N.M. no. U'JSO: 1, Dorsal view; 2, lateral view. About two- 

 elevenths natural size, llagerman lake beds, upper Pliocene, Idaho. 



