TEETH OF THE MESOZOIC MAMMALS 



27 



l';xtci'iia[ or maxillary licic. 



i.of. 



A 



'fine 6C s r 4 c 3 c a i_s 



r r f f ' ^4K i= - '**"&.-"* 



c ' i c ^r- 



'^:^u | 



fi -mt z pr 3 4 fir 5 i / mr 



-> -^ 



. , , ^ 



m 



* 



-,'^ ^ 



Painted or internal view . 



FIG. 14. Superior molai - s of Dryoh-stcs Marsh. Upper Jurassic, Wyoming. A. Series of the 

 left side, external and crown views. B. Series of the right side, external, crown and internal 

 views. Yale Museum, c, c, c, external and internal cingula. i. o. f. infraorbital foramen. Other 

 abbreviations as in Fig. 12. (Cf. Fig. 207 2 and p. 220.) 



Jurassic Triconodonta ? (Fig. 12) and Pantotheria (Trituberculata). Upper Teeth. 



and Jaws. For scale see Fig. 4. 



Fin. 1">. AmphitJierium prevostii. Lower Jurassic, England. Internal view, enlarged. After Goodrich. 



FIG. 16. Peramus. Upper Jurassic, England. External view, enlarged. 



Fir;. 17. Inferior molars of Amphitln i-ium /n; roxlii. A, inner view of a molar of the right side ; 

 -B, outer view of a molar of the left side (restored), enlarged. After Goodrich. 



Figs. 15-17. Jurassic Pantotheria (Trituberculata). Lower Teeth and Jaws. 



For scale see Fig. 4. 



