PLATE 23 



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1. Lett leg and pelvis ol Ifhthyfaiithit* pltilypns Cope, from the Coal Measures of Ohio. 



X 1.7. Original the property of the Department of Geology of Columbia University. 

 c=centrale; /*"=fibula; /?=fibulare; /->=femur; ?=intermedium; /7=ilium; 7~=tibia; 

 /, 7-5=distal tarsalia; /;'=tibiale; F=caudal vertebrae; /- f'=digits. 



2. Ventral scutellae of Ctenerpeton ah'colatiini Cope, from the Coal Measures of Ohio. X 3.5. 



Original in U. S. National Museum. 



