AMEGHIXO: LES FORMATIONS SÉDIMENTAIEES 557 



Osirea Philippii, 128, 129, 136, 148. 145, 



150, 154, 159, 160, 161, 163. 

 Ostrea puelchana, 279, 517. 

 Oslrea pjTotheriorum, 45, 61, 62, 77, 



S5, 93, 95, 105, 112. 

 Ostrea pyrotheriorum (couches á). 45, 



46, 62, 63, 65, 76, 223, 225. 

 Ostrea rionegrensis, 47, 50, 53, 512. 

 Ostrea tardensis, 509. 

 Ostrea Torresi, J2S, 129, 154, 156, 159, 



160, 163, 233, 503, 515. 

 Ostrea ultima spaei, 56. 

 Ostrea vulseloides, 56, 508. 

 Ostrea Wilckensi, 50. 

 Othnielmarshia, 293, 467. 

 Othnielmarshia lacunifera, 292. 



Oxyclaenus, 283, 



Oxygomphius, 389. 



Oxymicterus, 488-491. 



Osyodontherium, 481. 



Osyrhina, 186. 



Oxyrhina angustidens, 71, 180, 184, 506, 



520. 

 Oxyrhina biconvexa, 183. 

 Oxyrhina crassa, 180, 184, 520. 

 Oxyrhina Desori, 180, 184, 259, 502, 520. 

 Oxyrhina hastalis, 136, 168, 179, 180, 



185, 259, 276, 464, .502, 519. 

 Oxyrhina Mantelli, 71, 98, 506, 507. 

 Oxyrhina patagónica, 179, 180, 184, 4(53, 



519. 

 Oxyrhina uncidens, 183. 



P. 



Pachybiotherium, 474, 505. 

 Pachynasna, 397, 485, 501. 

 Pachypithecus, 466. 

 Pachyrucos, 166, 473, 477, 480, 483, 484, 



486. 503. 

 Pachyrucos bonaerensis, 500. 

 Pachyrucos typicus, 501. 

 Pachyzaédyus, 470. 

 Paginula, 467. 

 Palaehoplophorus, 482, 483, 

 Palaehoplophorus meridionalis, 268. 

 Palaehoplophorus Scalabrinii, 268. 

 Palaeobalaeua, 473. 

 Palaeocavia, 485, 488. 

 Palaeochoerus, 405. 

 Palaeocyon, 486, 487. 

 Palaeocyon tarijensis, 500. 

 Palaeolama, 486, 487, 489, 490. 

 Palaeolama leptognatha, 499. 

 Palaeolama mesolithica, 499. 

 Palaeolithops, 478. 

 Palaeomastodon, 340, 341. 

 Palaeomastodon Beadnelli, 333, 336, 



339. 

 Palaeomys. 243. 

 Palaeopeltis, 470, 472, 506. 

 Palaeopontoporia, 481. 

 Palaeotherium, 804. 

 Palaeotherium magnum, 303. 

 Palaeotoxodon, 481, 483, 502. 

 Palaepanortus, 472, 474. 

 Paloplotherium minus, 301. 

 Panochtus, 48(i-489. 

 Panochtus bullifer, 500. 

 Panochtus tuberculatus, 500. 

 Panopaea bagualesia, .511. 



Panopaea Hauthali, 57. 

 Panopaea Ibarri, 161, 515. 

 Panopaea inferior, 51, 57. 

 Panopaea neocomiensis, 509. 

 Panopaea orientalis, 511. 

 Panopaea Pilsbryi. 500. 

 Panopaea quemadensis, 130, 134. 

 Panopaea regularis, 137, 141. 

 Panopaea subsymetrica, 515. 

 Panopaea Torresi, 161, 515. 

 Pantolambda bathmodon, 300. 

 Pantostylops, 320, 467. 

 Pantostylops completus, 507. 

 Pantostylops tj^pus, 321, 507. 

 Papio, 428. 

 Pappichthys, 186, 187. 

 Pajjpichthys patagónica, 183, 521. 

 Parabderites, 472, 474, 505. 

 Paraceros, 486, 487, 489. 

 Paracoelodus, 467. 

 Paradidelphys, 485. 

 Paradoxomys, 481. 

 Paraepanorthus, 478. 

 Parahipparion, 486, 500. 

 Parahyaenodon, 392, 485. 

 Parahj^aenodon argentinus, 392. 

 Parailurus, 396. 397. 

 Parailurus anglicus, 396. 

 Paramyocastor, 478. 

 Paramys. 367, 408. 

 Paranauchenia, 481, 502. 

 Paraplanops, 479. 

 Parapyrotherium, 334, 341, 472. 

 Pararctotherium, 399, 488, 489, 500. 

 Pararctotherium enectum. 399. 

 Parasteiromys, 413, 474. 



