INDEX. 





Academy of Natural Sciences of Phil- 

 adelphia, 85 

 Acanthopoma annectens, 119 

 Aceratherium tridac'tylum, 265 

 Acestrorhamphinse, 154 

 Acestrorhynchus ferox, 143, 154 



hepsetus, 154 

 Achiridse, 147 

 Achirus jenynsii, 147, 156 

 Acichelydidae, 13 



yElurocyon brevifacies, 56, 68-71. 

 ^Equidens dorsigera, 155 



paraquayensis, 144, 155 



portalagrensis, 155 



tetramerus, 144, 155 



vittata, 155 

 Agate Spring, Nebraska, 44 

 Agate Spring Fossil Quarry, 17, 51, 

 60-63, 72 



Provisional list of fauna, 46 

 Ageneiosus brevifilis, 149 



Valenciennes, 149 

 Ageniosinae, 149 

 Age of the Flint Creek and Madison 



Valley Beds, 98 

 Agoniatites, 168 

 Agriochoeridse, 30, 97 

 Aguapehy River, no 

 Aimophila botterii sartorii, 302 

 Alegre River, no 

 Allen, J. A., 126 

 Altippus taxus, 271 

 Amazon River, no 

 American Association of Museums, 



82, 159 

 American Geology, 169 

 American Journal of Science, 174, 



186, 212 

 American Lime and Stone Company, 



Pennsylvania, 82, 228 

 American Museum of Natural His- 

 tory, 184, 248, 251 

 Ames Limestone, 234 

 Ami, Dr., H. M., 170 

 Amphibia, 235 

 Amphicyon americanus, 51 



crucians, 52 



superbus, 46, 51, 53 

 Anchippus, 57 



texanus, 93 



Anchitherium, 91 



aurelianense, 57 

 Ancient Fauna of Nebraska, 101 

 Ancistrus cirrhosus, 149 



cirrhosus dubius, 149 



hoplogenys, 149 

 Ancylotherium, 60 

 Andrews, Dr. Charles W., 160 

 Anisits, J. Daniel, 111 

 Anisitsia othonops, 124, 151 

 Anodus latior, 151 

 Anostomatinre, 151 

 Anostomus fasciatus, 124 

 Aphelops ceratorhinus, 256-264 



megalodus, 259 



montanus, 256-258 

 Aphyocharax alburnus, 152 



anisitsi, 152 



dentatus, 126, 152 



rathbuni, 152 



stramineus, 152 

 Archelon, 8, 9 



ischyros, 10, 11 

 Archinacella deformata, 169, 171, 172 



propria, 172, 218 

 Arctodus haplodon, 231, 233 

 Arthropoda, 243 

 Artiodactyla, 56 

 Asaphus romingeri, 243 

 Aspidobranchia, 171 

 Aspidonectes spinifer, 9, 11 

 Aspredinidse, 147 

 Astronotus ocellatus, 155 

 Astyanax, 127 



abramis, 152 



bimaculatus, 137, 153 



bimaculatus lineatus, 153 



bimaculatus (maculatus), 137 



fasciatus, 137, 141, 152 



hauxwellianus, 152 



iheringi, 138, 152 



moenkhausia, 153 



moorii, 153 



pelegrini, 136, 152 



rutilis, 153 

 Astyanax Baird and Girard, Key to, 



128-136 

 Auchenipterinse, 148 

 Auchenipterus nigripinnis, 117, 148 

 Bad Land Creek, Nebraska, 283 



3°3 



