534 MUSEO NACIONAL DE BUENOS AIRES. 



Pages 



Oldfieldthomasia parvideiis 45, 48, Sí, 29ii, 302 



Oldfieldthomasia plicata 208, 20Í) 



Oldfieldthomasia transversa 47, 87, 14í5 



Onohippidion 37, 189, 216, 25!J, 272, 273, 277 



Oroacrodon 204, 422, 423 



Oroacrodon ligatus 204, 422, 435 



Othnielmarshia 88, 111, 145 



Othnielmarshia lacunifera 110, 145 



Dxyodoiitherium 165, 429, 430, 435 



Oxyodoutheriuiii Zeballosi 165, 429 



Pat'hynoloplius (i9, 107 



Palaeolama 95 



Palaeolama Castelnuudi 72 



Palaeotherinm 70. 73, 74, 80, 81, 93, 94, 98, 106, 11], 116, 3.-)(i, 457, 48(i 



Palaeotheriiim magnuin 70, 96, 98 



Paloplotlierium 154, 457 



Paloplotherium eliiUim 154, 155, 452 



Pantolambda 67, 1.57, 206, 356-363, 3(í7, 389, 401, 489 



Pantolambd.i batliinodou 3.57, 358, 401 



Pantostylops 14.5', 159, 373, 374, 385, 405, 406 



Paiitostylops eoiiipletus 374, 383, 384, 405, 406 



Panlostylops typus 146, 373, 405 



Paraooelodus 307, 308, 320, 339, 340, 495 



Paracoelodus marginalis 4(i, 31)7, 3(18, 338 



Parahipparion 216, 224, 273, 277 



Parahipparion meridioiíalis 273, 274 



Parahippus • 265, 493 



Parahippus cognatus 265 



Paraiiaueheiiia 427, 429, 430, 435 



Paranauchenia denticulata 428 



Parapyrctherium 159 



Parapyrotherium planum 159 



Pararctotherium eiiectum 61, 62 



Parastrapotheriuin 103, 294, 295, 342, 343, 3.56, 381 



Parastrapotberium Holmbergi. ..'.'. 73, 103, 115, 174, 202, 342, 343, 381 



Parastrapotherium insuperabile 292, 293 



Parastrapotlieriuiu martiale 172, 173, 202 



Parastrapotherium Trouessarti 425, 426 



Parasty lops coelodus 352 



Patriarchippus 136, 143, 265 



Patriarcliippus annéctens 135, 265 



Perhippidion 41, 185, 186, 253 



Perhippidion tetragonoides 183, 254 



Periacrodou 130 



Periacrodou lanciformis 129 



Peripantostylops 104, 206, 374 



Peripantosty lops minutus 206, 374 



Peripthychus 67, 363, 392-395 



Peripthychus rhabdodon 392 



