1022 
MAMÍFEROS FÓSILES ARGENTINOS 
Peramelidae, 894. 
Peratheridae, 277, 346, 894. 
Peratherium, 968, 972. 
Perchoerus, 971. 
Perimys, 19, 168, 170, 211, 212, 927, 932, 962, 967. 
Perimys erutus, 171, 172, 903, 924. 
Perimys onustus, 172, 924. 
Perimys proceras, 172, 924. 
Perimys Scalabrinianus, 903, 929. 
Periptychidae, 893. 
Periptychus, 760. 
Perissodactyla, 354, 374, 491, 893, 894, 896, 925, 930, 935,939, 
952, 956. 
Pirmipedia, 276, 342, 345, 894, 896, 898. 
Pithanotomys, 26, 154, 161-163, 165, 167, 371, 936, 947, 948, 971, 
976. 
Pithanotomys columnaris, 162, 164, 934. 
Pithanotomys cordubensis, 165,948, 943. 
Pithanotomys intermedius, 164, 934. 
Pithanotomys macer, 165, 934. 
Pithanotomys similis, 75, 164, 165, 934. 
Pithecidae, 100, 101, 893, 954, 958. 
Pithecistes, 975. 
Pitimys, 980. 
Plagiaulacidm, 14, 18, 48, 268, 271, 894, 898. 
Plagiaulacoidea, 263, 268, 275, 894, 896, 898, 911, 924, 963, 965, 
967, 968, 972. 
Plagiaulax, 269, 275, 927. 
Plagiaulax Becklesii, 269. 
Plagrolophus, 966. 
Planodus, 619, 928, 962. 
Planodus ursinus, 619, 925. 
Pianops, 19, 681, 688, 928, 964. 
Planops longirostratus, 688, 926. 
Planorbis, 41. 
Planorbis peregrinus, 34, 40. 
Planungulata, 44,893, 896, 934,938, 951, 956. 
Piataéomys, 154, 161, 165, 167, 262, 936, 971, 976. 
Plataeomys scindens, 161, 934, 938, 943, 983. 
Platanistidae, 883-885, 895. 
Plalatherium, 614, 615,920, 953, 975,980. 
Platatherium magnum, 615. 
Platatherium pampaeum, 615, 920, 952, 987. 
Platemys paranensis, 23, 48. 
Platemys torrentium, 22. 
Platyonyx, 78 , 691, 704-706, 719, 732, 742, 948, 950, 978. 
Platyonyx Agassizii, 732, 987. 
Platyonyx Blainvillei, 732. 
Platyonyx Brogniarti, 732. 
Platyonyx Bucklandi, 732. 
Platyonyx Cuvieri, 732, 987. 
Platyonyx minutus, 732. 
Platyonyx Oliveri, 732, 941, 945, 987. 
Platyartlira, 44, 103-105, 631, 893, 896, 898. 
Platygnatus platensis, 703. 
Platygonus, 976, 980. 
Platyodon, 716, 735, 948, 978. 
Platyodon Annaratonei, 718, 940. 
Platyrhynchus leoninus. 343. 
Platyrhynchus mollosinus et uraniee, 343. 
Plathrrhini, 100. 
Plaxhaplus, 767, 839, 840,844, 849, 850, 851, 881, 882 , 937, 948 ? 
949, 973, 978. 
Plaxhaplus anticus, 850, 936, 946. 
Plaxhaplus canaliculatus, 767, 850, 941, 946, 988. 
Plecotus velatus,352. 
Pleiodonta, 053, 654, 880, 895, 896, 898, 925, 964. 
Plesiadapis, 959. 
Plesiarctomys, 962, 967. 
Plesictis, 968, 972. 
Plesidacrytherium, 966. 
Plesiocyon, 968. 
Plesiomeryx, 970. 
Plesiosorex, 972. 
Plesiospermophilus, 967. 
Pleuraspidotherium, 963. 
Pleurolicus, 971. 
Plexochoerus, 242-244, 247, 249-253, 259, 261, 932, 967. 
Plexochoerus adluis, 252, 253, 909, 929. 
Plexochoerus Lynchii, 910, 929. 
Plexochoerus paranensis, 250, 251-253, 909, 910, 929. 
Pliauchenia, 596, 975. 
Plicatodon, 500, 948, 949, 974, 979. 
Plicatodon perrarus, 500, 939, 944, 986. 
Pliohipus, 974. 
Pliolagostomus, 168, 171, 173, 187, 188, 211,212, 727, 963. 
Pliolagostomus notatus, 173, 924. 
Pliomorphus, 661, 673, 681, 690, 695, 696, 701, 702, 704, 705, 706, 
718, 933,968. 
Pliomorphus mutilatus, 695, 696, 931. 
Pliomorphus robustus, 696, 931. 
Pliopithecus, 969. 
Plohophorus, 25, 27, 767, 794, 795 , 824-827, 829, 835, 881, 882,937, 
973. 
Plohophorus Ameghini, 14, 25, 48, 825, 826, 922, 936. 
Plohophorus figuratus, 26, 75, 767, 824, 825, 827, 936. 
Plohophorus (?) orientalis, 827. 
Poebrotheridee, 894. 
Poebrotherium, 970. 
Pogonodon, 972. 
Polidactyla, 375. 
Polymastodon, 911,923, 963. 
Polymastodontidae, 894. 
Pontistes, 884. 
Pontistes rectifrons, 21, 48, 884. 
Pontoporia Blainvillei, 884, 
Pontoporia paranensis, 881. 
Potamarchus murinus, ¡192, 201, 203. 
Potamotherium, 972. 
Potamys coypou, 132. 
Praeuphractus, 26, 868-870, 881, 882, 932, 937, 968, 9/3. 
Praeuphractus limpidus, 869, 931. 
Praeuphractus recens, 75,870, 936. 
Praopidae, 823, 853, 860, 864; 881, 882, 895, 941, 949, 951, 953, 
954, 957, 958. 
Praopus, 861,862, 870, 882, 948-950, 978, 996, 997. 
Praopus aff. hybridus, 62, 861. 
Praopus aff. longicaudatus,861. 
Praopus hybridus, 51, 57, 861, 996. 
Praopus longicaudatus, 861. 
Braotherium, 981. 
Priodon, 859, 875, 880-882, 957. 
Priodon giganteus, 871, 876. 
Priodon gigas, 876, 957. 
Priodon gigas fossilis, 876. 
Priodonta, 653, 654, 895, 896, 898. 
Priodontes gigas, 876. 
Prionodonta, 883. 
Prionodon gigas, 876. 
Proailurus, 972. 
Proalligator australis, 22. 
Proanthropomorphus, 97, 99. 
