PLATE 58 



Onyclwdus si jnoidcs Newberry 

 Fig. I. Laniary tooth from mandible, X f . E 1873, P- 180. 



Fig. 2. Series of 6 premandibular teeth, with their supporting symphyseal bone; 

 natural size. E 1871, p. 180. 



Fig. 3. Left mandible, lacking anterior extremity; outer view. X |. E 2556. 

 (Cf. text-fig. 59.) p. 179. ang, angular; art, articular; den, dentary. 

 3a. Tooth of preceding enlarged 3 times. 

 3b. Enlargement of surface ornamentation of mandible shown in Figure 3. 



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