THE SKELETAL SVSL'ExVI 



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Cartilage bones are in bold-face type; dermal bones in italics. 



d, dorsal; v, ventral; 1, bones which are lateral and paired; m, a median bone. All bones not 

 otherwise designated are lateral and paired. 



* Cartilage bone more or less augmented by addition of dermal bone. 



t A name which (with appropriate prefixes) applies to two or more bones which are closely related 

 in origin and position: e.g., mesethmoid, ectethmoid; entopterygoid, metapterygoid, etc. 



X Homology of alisphenoid and vomer of mammals with alisphenoid and vomer, respectively, of 

 lower vertebrates is questionable. 



(Modified from Rand, Comparative Anatomy of Vertebrates, Harvard University Press, 1929.) 



