GREGORY: FISH SKULLS 



109 



deth\ »^°- 



pmx '. 



WD' 



Polypterus 



Fig. 10. Polypterus sp. Side view, 

 deth 



;ana" 



„na-postrost 



plate 



dsoe—- 



scale I 



bone 



Polypterus sp. 



Fig. 11. Polypterus %^. Top view. 



