10 



RANA 



16. Skull viewed from above: premaxilla; maxilla; nasal; sphenethmoid ; fronto-parietal ; otic; pterygoid; 

 squamosal; quadrato-jugal ; exoccipital; orbital fossa. 





17. The same viewed from below : premaxilla ; maxilla ; vomer ; parasphenoid ; palatine ; sphenethmoid ; 

 pterygoid; quadrato-jugal; otic; exoccipital; foramina of the optic (n), trigeminal (v), glosso-pharyngeal (ix), 

 and vagus (x) nerves. 



