PLATE XIII. 



BLANCO EPOCH. 



Figures 1-3. Megalonyx leptostomus, Cope; natural size; from Mont Blanco. 



Figure I. Fragments of palate from below, with supposed positions of teeth. 



Figure 2. Last superior molar, from below; a. from side. 



J'igure 3. Occipital condyle from above. 



Figure 4. Borophagus diverside7is, Cope; fragment of left mandibular ramus, 



external view; a, from above; b. posterior view. 

 Figures. Platygonus hicalcaratns, Co^e; last inferior molar, external view; a, 



from behind ; h. from above. 



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