INDEX 



Page numbers referring to descriptions of fossils are printed in black 

 face type. The superior figures tell the exact place on the page in ninths; 

 e. g. 168 3 means page 168, beginning in the third ninth of the page, i. e. 

 about one third of the way down. 



Actinopteria, 168 3 

 boydi, 126 4 



muricata, 115 4 , 131 9 , 133 9 , 150 7 , 

 152 2 , 168 4 

 Agelacrinites, 182 1 -98 4 



alleganius, 182 s , 187 9 , 188 7 , 189 1 , 



189 9 , 190 5 , 190 6 , 191 3 , 192 5 

 beecheri, 183 3 , 191 5 , 192 6 , 195 5 - 



96' 

 billingsi, 189 s , 191 2 

 blairi, 188 7 , 197 9 , 198 2 

 bohemicus, 189 s 



buttsi, 183 1 , 189 2 , 190% 190 6 , 192 5 , 

 196 7 -98 4 

 explanation of plate, 225* 

 cincinnatiensis, 185 1 , 189 2 , 189 7 , 



190 2 , 191 2 , 196 4 

 dicksoni, 189 2 , 190\ 191 2 , 191* 

 hamiltonensis, 184 s , 187 1 , 188 7 , 

 188 9 , 189 7 , 190 3 , 190 5 , 190°, 

 191 2 , 191 7 , 192 5 , 193 4 

 explanation of plate, 224 s - 

 25 4 

 holbrooki, 189 3 , 190 s , 191 2 

 kaskaskiensis, 1S5 2 , 186 1 , 186 2 , 

 186 3 , 186 fi , 186 9 , 188*, 190 2 , 191 6 , 

 192 5 

 lebouri, 191 3 , 196 6 

 legrandensis, 189 2 , 190 5 , 192 5 , 



197 s 

 optatus, 192 5 

 pileus, 190 3 

 rhenanus, 191 2 

 sampsoni, 191", 192 5 

 septem brachiatus, 190 4 

 squamosus, 184 s , 188 7 ? 190\ 191 8 . 

 191 s , 192 6 



Agelacrinus, use of term, 184 2 , 189 8 

 Agelacystis, 1S7 2 

 Ageladiscus, 187 5 , 188*, 193* 

 Agoniatite limestone, 116 6 ; stratig- 

 raphy, 117 3 -19 3 ; fauna, 124 5 -25 7 ; 

 conclusions regarding, 137 4 

 Agoniatites expansus, 117 7 , 120", 

 120 s , 121 3 , 122 4 , 123 3 , 123°, 124°, 

 125 3 , 125 7 , 137 2 , 137 3 

 nodiferus, 122 4 

 Alecto inflata, 12 5 

 Ambocoelia, 122 6 , 165 T -66 3 



• nana, 132 5 , 134 4 , 142 s , 143 3 , 144 5 , 

 145 1 , 145 6 , 146 4 , 146°, 146 s , 

 147 G , 148 1 , 148 5 , 149 s , 150 4 , 

 152\ 152 9 , 165 4 , 165 7 -66 3 

 explanation of plate, 223 3 

 cf. nana, 125 7 



praeumbona, 136 1 , 137\ 142 4 

 umbonata, 135 9 , 353 4 , 153 5 

 Ami, H. M., cited, 81 s 

 Amnigenia, value as an indicator of 



fresh-water deposits, 199 1 -203 2 

 Amnigenia catskillensis, 199 4 , 201 s , 

 202 2 , 202 s 

 explanation of plate, 226 5 

 jukesi, 202 2 

 rhenana, 201 4 , 202 3 

 Ampyx, 10\ 24 7 , 48 3 -54 5 , 65 9 

 americanus, 50 3 

 costatus, 51 7 

 halli, 50 4 



hastatus, 12 2 , 41 8 , 46 8 , 48 4 -54', 

 56 2 , 97 7 , 105 7 

 explanation of plate, 210 s 

 nasutus, 52 3 

 normalis, 50 5 



