1020 
MAMÍFEROS FÓSILES ARGENTINOS 
Neuryurus, 840, 814, 851, 881, 882, 932, 937, 948, 949, 968, 972, 
978. 
Neuryurus antiquus, 75, 842, 843 , 936. 
Neuryurus interundatus, 843. 
Neuryurus rudis, 67, 842, 843, 941, 946. 
Ni inra vidas, 894. 
Nimravus, 972. 
Noctlioro trivirgatus, 101. 
Noctilio, 350, 957. 
Noctilio affinis, 350. 
Noctiiio albiventer, 350. 
Noctilio dorsatus, 350. 
Noctilio leporinus, 350, 956. 
Noctilio mastinus, 350. 
Noctilio ruber, 350. 
Noctilio ruíipes, 350. 
Noctilio rufus, 350. 
Noctilio unicolor, 350. 
Nopachtus, 26, 75, 767, 791, 828, 830, 835, 819, 850. 881. 882, 937, 
948, 949, 972, 978. 
Nopachtus, coagmentatus, 14,27, 48,768, 829, 936, 941, 946, 
988. 
Notharctus, 960. 
Nothropus, 664, 673, 674, 697-702, 706, 918, 950, 977. 
Nothropus priscus, 697, 700, 940, 945, 987. 
Notictis, 911, 932,967. 
Notictis Ortizii, 912, 930. 
Nototheridae, 894. 
Nymíicejus, 357, 957. 
Nycticejus bonaérensis, 352. 
Nycticejus ruber, 351, 956. 
Nycticejus varius, 352. 
Nyctinomus, 351, 957. 
Nyctinomus braziliensis, 351. 
Nyctinomus nasutus, 351, 956. 
Nyctipithecus, 101, 957. 
Nyctipithecus felinus, 101, 954. 
Nyctipithecus trivirgatus, 101. 
Nyctiplanus rotundatus, 349. 
O 
Ocnopus, 666, 673,977. 
Ocnopus Laurillardi, 987. 
Octocyon; 311, 312, 344. 
Octocyodontid®, 346. 
Octodon, 161, 166, 167. 
Octodontidm, 122, 153, 157, 165, 166, 262, 891, 934, 937, 938, 949Í 
954, 955, 958. 
Odontoceta, 883, 895; 896, 898. 
Olenopsis; 132, 145, 152, 153, 901, 927, 932, 962, 967. 
Olenopsis typicus, 901, 929. 
Olenopsis uncinus, 145, 146, 151, 924. 
Oligobunis, 972. 
Oligodon, 753. 
Oligodon pseudolestoides, 753. 
Oligotomus, 961. 
Omegodus, 971. 
Omomys, 959. 
Opisthotomus; 960. 
Oyistorrhinus, 524. 
Opistorrhinus Falconeri, 529. 
Oracanthus, 673, 674. 
Oracanthus Burmeisteri, 673, 674. 
Orea, 57, 886. 
Oreas, 975. 
Oreodon, 969. 
Oreodontidí-e, 576, 894, 940, 949. 
Oreomys, 971. 
Oreopithecus, 959. 
Orotherium, 961, 969. 
Orthaspidothcrium, 963. 
Orthocynodon, 961. 
Orthomycfera, 26, 213 , 214, 218,219, 260, 261, 947 , 948, 950. 971 
976. 
Orthomyctera lacunosa, 75, 220, 934. 
Orthoiuyctera lata, 68, 220, 936, 938, 943, 984. 
Orthoinyctera rigens, 218, 934. 
Orlhomyctera vaga, 219, 934. 
Orthomys, 132, 149, 152, 153, 932, 967. 
Orthomys dentatus, 150, 151,902, 929. 
Orthomys procedens, 150, 902, 929. 
Orthomys resecans, 151, 929. 
Ortotherid®, 665, 680, 682, 683, 689, 701, 702., 756-758, 895, 921 
926, 928, 931, 933. 
Ortotherium, 683, 684, 686, 701, 932, 968. 
Ortotherium laticurvatum, 681, 931. 
Orycteropidae, 657, 658, 925. 
Orycteropus, 658, 734 
Orycthcrotheriuin, 759, 775. 
Ostrea, 16, 17,29, 48. 
Ostrea Alvarezi, 23, 
Ostrea Ferrari si, 5, 14, 21, 48. 
Ostrea patagónica, 5, 15, 16, 17, 19, 20, 22, 23, 48. 
Ostrea puelchana, 5, 39. 
Otaria, 57, 343. 
Otaria Byronia, 343. 
Otaria Fischeri, 342. 
Otaria Godeílroyi, 343. 
Otaria Ilookeri, 343. 
Otaria jubata, 343. 
Otaria leonina, 343. 
Otaria minor et pygmaea, 343. 
Otaria rnollosina,343. 
Otaria Pernetyi, 343. 
Otaria platyrhinchus et chilensis, 343. 
Otaria Ulloíe, 343. 
Ovibos, 980. 
Ovis, 975, 980. 
Oxacron, 969. 
Oxyaena, 965, 967. 
Oxyaenidae.894. 
Oxyodonta, 663, 661. 
Oxyodontlierium, 374, 524, 525, 534, 535, 543, 515, 116, 550, 551 
932, 066. 
Oxyodontlierium Zeballosi, 524, 543, 930. 
Oxymycterus, 110, 112, 118, 947, 950, 953, 957, 976, 980. 
Oxymycterus breviceps, 113, 982. 
Oxymycterus cosmodus, 113, 982. 
Oxymycterus impexus, 112, 938, 942, 982. 
Oxymycterus nasutus, 112. 
Oxymycterus rufus, 112, 113, 120, 938, 912, 951, 955. 
•Oxymycterus rufus fossilis, 112, 982. 
Oxymycterus talpinus, 113, 982. 
P 
Paciculus, 971. 
Pachycynodon, 976. 
