10 CONTENTS. 



MAMMALIA— Continued. 



Order I'roboacidm. Pa^c 



Elephas 238 



amcricanus 238 



Mogacerops 239 



coloradonsis 23'J 



Order Solidungula 242 



Equus 242 



occidentals 242 



major 244 



Hipparion . 247 



Protobippus s. Merycbippus 248 



Ancbitberiuru 250 



australe - 250 



agreste 251 



(?) 252 



Order Buminantia 253 



Bison 253 



latifrons - 253 



Aucbenia 255 



besterna 255 



Procamelus 258 



virginiensis 259 



Megalomeryx - 260 



niobrarensis 2G0 



CHELONIA 260 



Emys 260 



petrolei , -, 260 



FISHES 261' 



Family Cyprinidce - - 262 



Mylocyprinus - 262 



robustus 262 



Family Baice 264 



Oncobatis 264 



pentagonus 264 



DESCRIPTION OF REMAINS OF REPTILES AND FISHES FROM THE CRETACEOUS 



FORMATION OF THE INTERIOR OF THE UNITED STATES 266 



REPTILES 267 



Order Dinosauria 267 



Poicilopleuron 267 



salens 267 



Order Chelonia 269 



Order Mosasauria 270 



Tylosaurus 271 



dyspelor 271 



proriger ...*. 271 



Lestosaurus 276 



corypbseus 276 



Mosasaurus 279 



Clidastes 281 



intermedius 281 



afflnis 283 



Order Lacertilia ; 285 



Tylosteus 285 



ornatus 285 



Order Sauroptcrygia 286 



Oligosimus -. 286 



grandaevus 286 



Notbosaurus 287 



occiduus 287 



FISHES 288 



Teleostei 288 



