DEVONIAN FISHES OF IOWA 281 



Senecan Stage of the Upper Devonian (Tully limestone, Gen- 

 esee SHALE AND POETAGE BEDS) ; APPALACHIAN PROVINCE. 



ELASMOBRANCHS. 



75. Cladodus urbs-ludovici Eastman. New Albany ( = Gen- 

 esee) Black Shale; Louisville, Kentucky. 



76. Cladoselache sp. Naples shale (Portage) ; Eighteen 

 Mile creek, New York. 



77. Acanthodes ? pristis Clarke. Naples shale (Portage) ; 

 Sparta, New York. 



78. Ptyctodus calceolus Newb. & W. Genesee shale; Eight- 

 een Mile creek, New York, and Louisville, Kentucky. Also 

 Portage of Naples, New York. 



79. Ptyctodus sp. Goniatite or Parrish limestone (Portage 

 group) ; Naples, New York. 



' 80. Rliyncliodus sp. New Albany ( = Genesee) Black Shale; 

 Kentucky. 



81. Apateacanthus vetustus (Clarke). Naples shale (Port- 

 age) ; Milo, Yates county, New York. 



82. Heter acanthus politus Newberry. Naples shale; New 

 York. 



83. Undetermined fin-spine. Tully limestone; Cayuga lake, 

 New York. 



84. Dermal denticles of (?) Cladoselache. Genesee shale; 

 Le Eoy, New York. 



ARTHRODIRES. 



85. Dinichthys newberryi Clarke. Genesee shale; Bristol 

 Center and Canandaigua lake, New York. New Albany (Gen- 

 esee) Black Shale, Louisville, Kentucky. 



86. Dinichthys ringuebergi Newberry. Naples shale (Port- 

 age) ; Sturgeon Point; near Buffalo, New York. 



87. Dinichthys pustulosus Eastman. Oneonta beds; New 

 York. Evidently a recurrent species in this horizon. 



88. Dinichthys dolichocephalus Eastman. Naples shale 

 (Portage) ; Sturgeon Point, near Buffalo, New York. 



89. Dinichthyid dermal armor. Oneonta beds; Oxford, New 

 York. 



