Macropetalichthys rapheidolabis Norwood & Owen 



(See plate g) 

 Page 103 



Dorsal aspect of large head shield, denuded of superficial ornamenta- 

 tion, and showing sutures, x 8/9 (approximately) 

 Delaware limestone (=" Corniferous ") ; Delaware, O. 

 Original in Ohio Wesleyan University, Delaware, O. 



