10 CONTENTS. 



MAMMALIA— Coutinuoil. 



Order Prohoscidca. Pa^o. 



Elephas 03^ 



americauus o^^ 



Megacerops 239 



coloradensis 239 



Order SoUdungula 242 



Equus 242 



occidentalia 242 



major 244 



Hippariou 247 



Prof ohiiipus s. Merychippus 248 



Auchitherium 250 



australe 250 



agreste 251 



(?) 252 



Order Ruminantia 253 



Bisou 253 



latifrous _. 253 



AucUenia 255 



hesterna 255 



Procamelus 258 



virginiensis 259 



Megalomerys 2()0 



niobrarensis 230 



CHELONIA 260 



Emys 260 



petrolei 260 



FISHES 201 



Family Ci/prinida; 262 



Mylocyprinus 262 



robustus 262 



Family Eaice 264 



Oncobatis 264 



pentagouus 264 



DESCRIPTION OF REMAINS OF REPTILES AND FISHES FROM THE CRETACEOUS 



FORMATION OF THE INTERIOR OF THE UNITED STATES 266 



REPTILES 267 



Order Dinonaurla 267 



PoicilopleuroQ 267 



valena 267 



Order Chdonia 269 



Order Mosusauria 270 



Tylosaurus 271 



dyspelor 271 



proriger 271 



Lcstosaurns 276 



coryphiBus 276 



Mosasaurua 279 



Clidastes 281 



iutermedius 281 



affiuis 283 



Order Lacertilia 285 



Tylostens 285 



ornat ns 285 



Order Sauroj)tcrijfjia 286 



Oligosimus 286 



graudajvus 286 



Nothosaurus 287 



occiduna 287 



FISHES 288 



Teleostei 288 



