232 



Nairn, 53, 54. 



Naples, 17, 20, 21, 58, 63, 70, "/Z. 

 Naples shale, 17, 57, 58, 156. 

 Neoceratoclus, 88, 89, 93. 94, 95, 100, 104, 

 105, 106, 108, 109, no, 115, 121, 132, 

 133. 149. 158; dentition of Dinichthys 

 and, 96-97; dentition of Mylostoma 

 and, 97-99. 



forsteri, 132. 

 New Albany beds, 18, 133. 

 New Brunswick. 28. 

 New Bufitalo, la., 160. 

 Newberry, John Strong, cited, 7, 5i> S^'^o, 



63, 68. 75, 76, 78. 79. 82, 85. 87. 90, 91, 



99, loi, 102, 103, 105. 109, III, 113, 115. 



117, 119, 125, 138, 141, 143. 147. 149. 157. 



162, 163, 169. 

 Niagara beds, 12, 59. yi. 

 Nictaux Falls, N. S., 13. 

 North Evans, 17. 

 North I.ihcrt\-, la., 74. 161, 162. 

 Nurth Walton, 74. 

 Nurwoud, cited, lOO, I02. 

 Nova Scotia, 13. 



Oesel, 40. 



Oestophorus. 157. 



Old Red sandstone, 26, 29, 159, 164, 166, 



171, 177. 189; upper, 53. 

 Olean, 88. 



Olean conglomerate, 21, yj. 

 Onchus, 73. 



sp., 12. 



clintoni, 12, 73. 



pennsylvanicus, 12. 73. 



rectus, 22, 74. 

 Oneonta beds, 17, 132. 133, 139. 

 Onondaga fish fauna, origin, K^i. 

 Onondaga group, 30. 

 Onondaga limestone, 9, 13, 14, 70, 79, 84, 



85, 112, 113, 115, 118. 169. 187, 188. 

 Onychodontidae, 23, 168-69. 



NEW YORK STATE MUSEUM 



Onychodus, 164, 168, 169, 193. 



sp., 16, 196. 



hopkinsi, 169, 197, 200, 212. 



ortoni, 19. 



sigmoides, 14, 16, 168, 169, 196, 200. 

 ( )racanthus, 78. 



abbreviatus, 79. 



fragilis, 79. 



granulatus, 79. 

 Oran, 15, 169. 

 Oriskany sandstone, 13. 

 Orodus, 75. 



elegantulus, 18. 

 Osteolepis, 167. 

 Osteostraci, 23, 2y, 28, 31. 

 Ostracoderms, 90, 180. 

 Ostracophori, 2^, 24-54, 90, 95, in, 148, 



179, 180. 

 Owen, cited, 100, 102, 164. 

 Oxford, 17, 133, 139. 



Paired fins, of Cladoselache, 56; dawn of, 



180-81 : as paddles. 181-82. 

 Palaeaspis americana, 12. 



bitruncata, 29. 



elliptica. 29. 



sericea, 29. 

 Palaeomylus. 66, 67, 7^,, 149, 193. 



crassus. 13. 



frangens. 13. 



greenei, 15. 153. 

 Palaeoniscidae, 2;^, 170, 171-72. 

 Palaeoniscus Pantiquus, 18, 171. 



Pdevonicus, 17, 171. 



? reticulatus, 18, 171. 

 Palenville, 139. 

 Paleoniscid fishes, 165. 

 Palaeaspis. 27, 28. 



americana. 29-30. 

 Pander. C. H.. cited. 36. 40, 114, 157, 



164. 

 I'arker. cited. 158. 



