4, Bulletin American Museum of Natural History 
[Vol. XXXIV, 
Pachyena ossifraga Cope 1874 
Syn., P. intermedia Wortman 1899 
Vert. New Mex., p. 94, pl. xxxix, fig. 10; (Mesonyx) 1882, Pal. Bull. 34, Proc. Am 
xxvild. 
Pachyena ossifraga Corre 1874, Rep. Vert. Foss. New Mex., p. 15; 1877, Ext 
Phil. Soe., XX, p. 165; 1885, Tertiary Vertebrata, p. 362, pl. xxvilia, xxviiib, xxviiic 
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Fig. 81. 
Gray Bull beds, Big Horn Basin. 
ere eas ee ee 
Pachyena ossifraga, palatal view of skull, one-third natural size. 
No. 15730, 
