lieol. ofOhi 



o, vol. in. PALEONTOLOGY XLII. Topof Ohio shale. 



Iifariickthys altenuafas, Wnq/u- 



3~tfa/Tlc/ifnz/s Clar-fce , 7le*i 

 26" 



Titonec/ithi/J Jlgassirt, ?u~i 



Titonicfu/it/j reo&ts. a 



2 2" 



