INDEX. 843 



Page. 



Olor ........................................ 530 



omnivorus (Phenacodus) .................. 604 



Omomys .................................. 787, 788 



Ornosauridse ................................ 495 



Omosaurus ........................... 1,96, 509, 510 



onchogiiuthus (Baptosaurus) .............. 468 



Onchus ..................................... 326 



Oncobatis .................... . ............. 316 



Ondatra .................................... 729 



Ontocetus .................................. 596 



Onychodectis .............................. 573 



Onycliod. mtidif ............................ 362 



Onychodus ................................. 363 



Ophiacodon ................................ 434 



Ophidia .................................... 478 



ophryas (Brontotherium) .................. 635 



ophryas (Miobasileus) ...................... 635 



ophryas (Symborodon) ..................... 6S5 



Ophthalinosaurus .......................... 1,63 



Opisarthri .................................. 300 



opisthaca (Protoselene) .................... 607 



opisthaem ( Hemithteus) .................. 607 



opisthacus (Mioclsenus) .................... 607 



Opisthrarthri ............................... 300 



Opisthoccelia ............................... 482 



Opisthotomus 



Oracanthus 



Oracodon 



orbicularis (Platysomus) 



orcina (Pelphinapterus) 



ordiana ( Janassa) 



nrdiiiMtiis (Ectocynodon) 



(irdiimtus (Pariotichus) 



oregonense (Aceratherium ) 



oregonense (Diceratherium) 



oregonense (Orycterotherium) 



oregonensis ( Aphelops) 



oregonensis (Ogmophis) 



oregonensis (Rhinoceros) 



oregonensis (Stylemys) 



oregonensis (Testudo) 



oregonus (Larus) 



Oreocyon 



Oreodon 



Oreodontidse 



Oreodontinae 



787,792 

 332, 334 

 561 

 369 

 694 

 276 



428 

 644 

 644 

 679 

 644 

 480 

 61,1, 

 451 

 1,51 

 526 

 757 



665, 66, 667, 668 



662,664,665 



665 



oreodontis (Hoplophoneus) ................ 779 



oreodontis (Machaerodus) .................. 779 



Oreosaums ................................. 475 



Oricardintis ................................ 388 



orientalis (Discosaurus) 



orientalis (Elasmosaurus) ............. 



orientalis (Teleopternus) ............. . 



ornata (Anosteira) .................... 



ornata (Anostira) ..................... 



ornata (Chelone) ..................... . 



ornata (Exocampe) ................... 



ornata (Lamna) ............................ 303 



ornatissima (Eurylepis) .................... 366 



ornatissima (Mecolepis) .................... 366 



ornatissima (Haplolepis) ................... 366 



ornatum (Rhabdoderma) .................. 364 



ornatum (Schistopleurum) ................. 580 



ornatus (Acipenser) .................... ---- 371 



ornatus (Amblypterus) ..................... 365 



ornatus (Catopterus) ....................... 370 



Page. 



ornatus (Coelacanthus) 364 



ornatus (Cojlorhynchus) 331 



ornatus (Cylindracanthus) 331 



ornatus (Deltodus) 293 



ornatus (Glyptops) 437 



ornatus ( Hoplophorus) sso 



ornatus (Mesodmodus) 297 



ornatus (Peritresius) 441 



ornatus (Poecilodus) 293 



ornatus (Redfieldius) 370 



ornatus (Orodus) 295 



ornatus (Tylosteus) 477 



Ornithites 535 



Ornithichnites 53$, 



539, 540, 543, 544, 545, 550, 551, 552 



Ornithischia 495 



Ornithocephalidse 506 



Ornithocephalus 507 



Ornithochirus 507, 508 



Ornithodelphia 555 



Ornithoidichnites 538, 539, 



540, 547, 51,2, 543, 544, 545, 548, 549, 550, 557, 552 



Ornithomimidse 494 



Ornithominius 494 



Ornithopappi 518 



Ornithopoda 495, 500 



Ornithopus 557 



Ornithsauria 506 



Ornithosauria ., 506 



Ornithoscelida 482 



Ornithostoma 507,508 



Ornithostomatidae 5C7 



Ornithostomatinse 507 



Ornithotarsus 505 



Ornithurse 619 



Orodontidse 295 



Orodus -. 295, 296, 297 



OrohippidK 60S 



Orohippus 609, 6/0, 611 , 612 



Oromeryx 672 



Oromys 734 



Orophosaurus 459 



Orotherium 609, 611,619 



Orthacanthus 264 



Orthacod us 302 



Orthhybodus 299 



Orthocynodon 647 



Orthodactylus 547 



orthodon (Palaeoctonus) 490 



Orthognathus 360 



Orthopleurodus 289 



Orthopoda 495,500 



orthopygia (Testudo) 451 



orthopygius (Xerobates) 457 



orthrostica (Mephitis) 766 



ortoni (Onychodus) 363 



Orycterocetus 595 



Orycterotherium 578, 579 



osagei (Tetracaulodon) 709 



osborni (Arctosaurus) 492 



osborni (Trigonias) 642 



osbornianum (Ectocion) 605 



osbornianum (Hyracotherium) 677 



osbornianus (Eohippus)l 605 



osbornianus (Oligotomus) 605 



osbornianus (Orohippus) 611 



