Sinclair: typotheria of the santa cruz beds. 
Fig. 20. 
Interatiierium sp. : Second and third upper premolars of the left 
side, showing pattern of unworn crowns, Xf 
(No. 15,187) 
48 
Fig. 21. 
< t 
“ Lower milk molars, crown view (No. 15,021). 
49 
Fig. 2 2. 
<4 
“ “ “ “ side “ “ 
49 
Fig. 23. 
4 4 
“ Upper “ “ crown “ (No. 15,541). 
49 
Fig. 24. 
4 4 
“ “ “ “ side 
49 
Fig. 25. 
( 4 
“ Mandible, crown view (No. 15,554). 
49- 5 1 
Fig. 26. 
4 4 
robustum : Part of the upper dentition of an old 
individual showing supernumerary 
canine (No. 15,293). 
48 
Fig. 27. 
4 4 
sp. : Part of the upper dentition of a young indi- 
vidual with alveoli for supernumerary canine 
and first premolar, probably due to the pres- 
ence of both milk and permanent teeth (No. 
15- 201 ) 
48 
Fig. 28. 
4 4 
excavatum : Atlas from above (No. 15,043). 
52 
Fig. 29. 
4 4 
robustum: Patella, front view (No. 15,348). 
Slightly restored from other specimens. 
57 
Fig. 30. 
4 4 
“ Patella, rear view (No. 15,348). 
Slightly restored from other specimens. 
All the figures except 20 are natural size. 
57 
(VOL. Vi) 
