282 COMPARATIVE ZOOLOGY OF CHORDATES 



hyomandibula and ceratohyal in the hyoid arch, and the 

 cartilages of the branchial arches. 



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One of the most important features of a skull is the method 

 by which the splanchnocranium is attached to the neuro- 

 cranium. The hyomandibula is always firmly attached to the 



