Fig. 
Fig. 
Fig. 
and base. 
2. 
3 
Fig. 4. 
of its walls. (Highly magnified.) 
Ag WZ 
Eusthenopteron Foordi, Whiteaves. 
Micro-section of head plate. 
Cross-section taken near tip of tooth. (Highly magnified.) 
Cross-section of a portion of tooth taken midway between tip 
(Highly magnified.) 
Cross-section of the base of tooth showing complex infolding 
56 
