INDEX. 



133 



Pa 



Paramys, delicatior 



delicatissimus 97 



delicatus 97 



excavatus 94 



leptodus 97 



major 94 



primsevus 94 



quadratus 94 



sciuroides 99 



uinteiisis 99 



sp , 97,99 



Paratylopus 66,111 



eameloides 68,109 



primsevus 106 



Sternberg! 68,109 



Parictis primsevus 107 



Passalacodon 101 



littoralis 96 



Patriofelis 45,50,100 



coloradensis 96 



ferox 50,96 



tigrinus 93 



ulta 50,96 



sp 49 



Pawnee Creek, Colo., faima of 114-115 



Peale, A. C, on volcanic ash 24 



Pecora 76,77 



Pelycodus 38, 40, 44, 46, 47, 100 



frugivorus . . . : 92 



jarrovii 92 



tutus 92 



sp 92,95 



Pentacodon 34,101 



inversus 92 



Peraceras 79,80,81,119 



superciliosus 116 



Peraceras zone, fauna of 81, 115-118 



homo taxis of 80 



Peratherium 110 



altemans 105 



comstocki 46,93 



fugax 105 



huntii 105 



marginale 105 



pygmaeum 105 



scalare 105 



titanelix 103 



tricuspis 105 



Perch cerus Ill 



lentus 106 



nanus 109 



osmonti 109 



platyops 109 



pristinus 109 



probus 106 



robustus 109 



rostratus 109 



socialis 109 



subaequans 109 



trichsenus 109 



sp 109 



Periptychidae 33, 35, 92, 102 



Periptychus 102 



carinidens 92 



coarctatus 92 



rhabdodon 92 



Page. 



Perissodactyla . . 33, 36, 38, 40, 41, 42, 46, 52, 53, 54, 55, 

 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68, 74, 75, 

 77, 80, 81, a5,86, 87,89, 94-95, 97-98, 99, 102, 104, 

 105-106, 108, 111, 113, 114-115, 116-117, 118, 120 



Peromyscus 90,110,119 



loxodon 116 



nematodon 107 



parvus 107 



Peterson, O. A., papers by 16 



Phenacocoelus 73,74,119 



typus 74,113 



Phenacodontidffi 33, 35, 40, 41, 42, 45, 92, 94, 102 



Phenacodus 38,40,44,45,102 



astutus 94 



brachyptemus 94 



flagrans 94 



hemiconus 94 



macroptemus 94 



nunienus 94 



primsevus ' 39,94 



sulcatus 94 



wortmani 49,94 



sp 94 



Philotrox 68,110 



condoni 107 



Phlaocyon lis 



leucosteus 112 



Pipestone Creek, Montana, fauna of 103-104 



Pithecistes decedens 115 



emydinus 115 



incisivus 115 



simus 115 



Plagiaulacidse 34,91,100 



Plains Region, deposition in 26-28 



deposits of, correlation of 31-32 



erosion in 21-22 



homotaxis of, with mountain deposits. . . 22 



figures showing 23 



mammalian life of 20,22 



Tertiary history of 19-23,26-28 



Tertiary topography of 28 



Planus 78 



Platygonus 83, 85, 87, 88, 89 



bicalcaratus 120 



striatus 117 



texanus 120 



Pleistocene, distribution of, plate showing. . . 7 



homotaxis and fauna of 83-90 



homotaxis of, figure showing 65 



Pleistocene, lower, homotaxis and fauna of.. 83-86 

 Pleistocene, middle, homotaxis and fauna of. 86-90 

 Pleistocene-Oligocene correlation, progress of. 31-32 



Pleurolicus 110 



diplophysus 107 



leptophrys 107 



sulcifrons 107 



Pliauchenia 79, 80, 81, 83, 120 



humphreysiana 117 



minima 117 



spatula . 120 



vera : 117 



sp - 117,120 



Pliocene, distribution of, plate showing 7 



gaps in 32 



fauna of 81-84,115-118 



homotaxis of 81-84 



figure showing 65 



