COCCOSTEOMORPHI 



265 



FIG. -234. 



Outer view of right jaws of DiniMhys Intermeilius, Newb. ; Upper Devonian, Ohio, n, anterior 

 Tipper piercing plate ; mil, lower piercing and cutting plate ; p, posterior cutting plate ; so, sub- 

 orbital, showing lateral-line groove. (From Jlrit. Mus. Guide.') 



//..!, ,..(i 1 ix riiillfi-i, Ti;iq. Cranial and dorsal shit-Ids, etc.. restored. (After Traquair, from 

 A. S. Woodward.) A. B, C, undetermined bones ; a.ill, anterior dorso-lateral ; at, ethmoid ; 

 e, central; e.o, external occipital; m, marginal; ia.<l, median dorsal; m.o, median occipital; 

 o, orbit ; p.'ll, posterior dorso-lateral ; po, preorbital ; jitr, piiu-al ; pto, postorbital. Double 

 dotted lines indicate the course of lateral-line canals. 



