968 



INDEX 



Ore-deposits, 68, 69, 73 



and magmatic waters, 74 

 Organic agencies, 296 



deposits in shallow water, 323 

 Origin of the earth, 415 

 Original crust, 247 

 Oriskanian series, 559 



fauna of, 578 



Ornithopod dinosaurs, 721 

 Orogenic movements, 352 

 Orohippus, 790 

 Orthis family, 585 



tricenaria, 528 

 Orthoceras, 526 



annulato-costatum, 614 



annulatum, 551 



bilineatum, 525 



blakei, 700 



of the Cretaceous, 771 



cribrosum, 658 



rushensis, 675 



sociale, 525 



Orthoceratites, 525, 550, 614. 657 

 Orthoclase, 79 

 Orthopters, 654 

 Ortmann, A. E., 817 

 Orton, E., 517 

 Ortonia minor, 533 

 Osage fauna, 607, 610 



series, 597 

 Osborn, H. F., 787 

 Oscillations of level in Pennsvlvanian 



period, 639 



Ostracoderms, Devonian, 590 

 Ostrea carolinensis, 825 



compressirostra, 797 



deltoidea, 713 



soleniscus, 768 



strigilecula, 715 

 Oswegan series, 537 

 Ouachita Uplift, 516 

 Oudenodon trigoniceps, 693 

 Outcrops, width of, 487, 488 

 Outwash plains, 271, 273, 871 

 Overthrust fault, Montana and Can- 

 ada, 755 



Ox-bow lakes, 188 

 Oxidation, 33, 102 

 Oxydactylus longipes, 821 

 Ozarkian epoch, 836, 837 



Pachynolophus, 790 

 Palache, C., 811 

 Palaeaspis americana, 556 

 Palseocaris typus, 655 



Paiaeohatteria longicaudata, 07:; 

 Palaeoneile coristricta, ">.s."i 

 PaliEOphonus ,557 



caledonicus, 556 

 Palseospondylus gunni, 591 

 Paleolithic man, 923 

 Paleoliths, <)23 

 Paleontologic geology, 1 . 

 Paleontology and stratigraphy, re- 

 lations of, 484 

 Paleozoic Alps, 605 



era, 435 



era, close of, 668 

 Palms, 761 



Palseaster simplex, 530 

 Paradoxides, 483 



Cambrian, 483 



fauna, 483 



Paralegocreas newsomi, 658 

 Paraphorynchus stratocostatus, 608 

 "Parasitic" cones, 380 

 Parasmilia texana, 740 

 Pareiasaurus serridens, 674 

 Pascagoula formation, 807 

 Patriofelis, 791, 792 

 Patten, W., 590 

 Payette formation, 778 

 Pearlstone, 86 

 Peat, 86, 635 

 Peat bogs, 632, 634 

 Peat, composition of, 634 



rate of accumulation, 640 

 Pecopteris unita, 645 

 Pecten choctawensis, 797 



complexicosta, 741 



deformis, 700 



madisonius, 825 



texanus, 740 

 Pedinopsis pondi, 768 

 Peet, C. E., 884 

 Pegmatite, 86 

 Pelagic deposits, 317, 326 



organic constituents of, :!'_ )( .) 

 Pelecypods, Cambrian, 498 



Chemung, 588 



Cretaceous, 769, 771 



Genevieve, 616 



Hamilton, 586 



Helderbergian, 577 



Jurassic, 712, 71:5, 715 



Onondagan, 581 



Ordovician, /VJ7 



Oriskany, 579 



Osage, 610 



Pennsylvania!!, '.."> 7 



