PLATE XXVI 



Described 

 on Page 



Eurylambda aequicrurius (Simpson). 42 



Fig. I. Single upper molar, same specimen as PI. XXV, fig. 5, posterior 

 view. X 12 diam. Type. Y.P.M. No. 13639. 



Tinodon Lefidus Marsh. 39 



Fig. 2. Left lower jaw with C, Pj.s, and M1.3, internal view. X 3^^ diam. 

 (Type of Menacodon rarus.) U.S.N.M. No. 2131. Photograph from 

 the United States National Museum. 



Fig. 3. Same, external view. X 3^ diam. Photograph from the United 

 States National Museum. 



Fig. 4. Left lower jaw with M^ and M3, internal view. X 7 diam. Type. 

 Y.P.M. No. 11845. 



Tinodon bellus Marsh. 39 



Fig. 5. Right lower jaw with M1.4, internal view. X 7 diam. Type. 

 Y.P.M. No. 1 1843. 



222 



