VERTEBRATES. 13H 



Genus POECILODUS, Ag. 



P. ornatus, N. and W. Sub-carboniferous. 

 P. rugosus, N. and W. Sub-carboniferous. 



Genus DELTODUS, N. and W. 



D. grandis, N. and W. Sub-carboniferous. 

 D. stellatits, N. and W. Sub-carboniferous. 

 D. undulatus, N. and W. Sub-carboniferous. 

 D. rhomboideus, N. and W. Sub-carboniferous. 

 D. cingidatus, N. and W. Sub-carboniferous. 

 D. spatulatus, N. and W. Sub-carboniferous. 

 D. angular is, N, and W. Sub-carboniferous. 

 D. complanatus, N. and W. Sub-carboniferous. 



Family CSIIiTIEROIDEI. 



Genus RINODUS, N. and W. 

 B. calceolus, N. and W. Devonian. 



RELATIONS UNCERTAIN. 



Genus EDESTUS, Leidy. 



E. minor, Newb. Coal Measures. 



FIN SPINES. 



Genus ORACANTHUS, Ag. 

 0. pnigeus, N. and W. Sub-carboniferous. 



