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KANSAS UNIVERSITY SCIENCE BULLETIN. 



Pig. 8. External view of the right side of the 

 pectoral girdle of Oillicus, X %. 



Fig. 9. External view of right half of the 

 pectoral girdle of ProtosphyrcEna, X Vs. 



Fig. 10. Caudal view of 

 left half of pectoral 

 girdle of Protosphy- 

 rwna, X % . 



