1006 
MAMÍFEROS FÓSILES ARGENTINOS 
Amynodon, 961. 
Anapíagenia, 980. 
Anaptomorphus, 959. 
Anaptomorphidse, 893. 
Anatherium, 18, 285, 289, 311, 312, 927, 961. 
Anatherium defossus, 289, 311, 921. 
Ancylotheriuin, 973, 977. 
Ancylus culicoides, 31, 10. 
Anchylophus, 936. 
Anchimys, 213, 238, 239, 371, 932, 967. 
Anchimys Leidyi, 239, 371, 929. 
Anchippodontidee, 929, 933. 
Anchippodus, 962. 
Anchippus, 969, 971. 
Anchisodon, 970. 
Anchitherium, 5, 520, 551, 556, 557, 969. 
Anchitherium australe, 551, 555, 557, 559. 
Anchitherium Bairdii, 556, 557. 
Anicanodonta, 653, 657, 757, 895, 925, 930, 935, 910, 952, 957. 
Anisacodon, 963. 
Anisolophus, 555-558. 
Anisolophus australis, 557, 559. 
Anisonchus, 960. 
Anodonta, 35, 11. 
Anoema, 233. 
Anomodon, 981. 
Anoplotherium, 3, 5, 190, 191, 551, 551-557, 558, 561,562, 577, 976. 
Anoplotherium americanurn, 190, 556, 557, 559. 
Anoplotherium grande, 190. 
Anoplotheridae, 551, 555, 576, 891. 
Antaodon, 193, 196-199, 918, 919, 971. 
Antaodon cinctus, 197, 939, 911, 986. 
Anthracotherium, 967, 970, 976. 
Antliracotheridai, 573, 821. 
Anthropoidee, 77. 
Antropoidea, 11, 45, 101, 105, 893, 896, 898, 931, 938, 951, 951, 
959, 966, 968, 969, 971, 979. 
Anthropomorphidee, 45, 893. 
Anthropomorphus, 87, 88, 97, 99. 
Anthropopithecus, 86, 87, 931, 936, 969. 
Antidoras, 975. 
Antifer, 599, 610, 918, 950, 995. 
Antifer ultra, 610, 910, 915, 987. 
Antílope, 970, 975, 980. 
Antílope maquinensis, 611. 
Antílope argentina, 615. 
Antilopidee, 579, 611, 891, 952, 921. 
Ápatemys, 962. 
Apera, 295, 306, 310, 932, 967. 
Apera sanguinaria, 310, 913, 930. 
Araucarioxylon Doeringi, 22. 
Arca Bomplandiana, 23. 
Arctocephalus falklandicus, 313. 
Arctocyon, 963. 
Arctocyonidm, 891. 
Arctodus, 977. 
Arctophoca, 312, 313. 
Arctophoca Fischeri, 312. 
Arctophoca falklandica, 313. 
Arctoidotherium latidens, 318. 
Arctomys, 369, 976, 979, 980. 
Arctopitheci, 100, 101. 
Arctotherium, 2, 16, 67, 69, 295, 315-317, 319, 320, 335, 932, 917, 
918, 950, 967, 977, 979. 
Arctotherium bonaerense, 30, 66, 67, 71, 72, 317-320, 927, 939, 
913, 985. 
Arctotherium angustidens, 33, 317, 318, 320, 939, 985. 
Arctotherium simum, 320. 
Arctotherium latidens, 315, 317. 
Arctotherium yetustum, 21, 317, 319, 320, 930. 
Archaelurus, 972, 
Archaeodonta, 355, 191, 573, 893, 896, 898. 
Archaeoidea, 105, 316, 891, 896. 
Archaeomys, 119, 971. 
Argillotherium, 964. 
Artiodactyla, 351, 371, 191, 572, 893, 891, 896, 935, 939, 955, 956. 
Arvícola, 257, 369, 976, 979. 
Arvícola gigantea, 235, 236, 257. 
Asterostemma, 822, 961. 
Asterostemma depressa, 823, 821, 926. 
Asterostemma granata, 823, 926, 
Asterostemma laevata, 823, 926. 
Astrapotherium, 18, 19, 357, 622-621, 920, 923, 927, 928, 962. 
Astrapotherium rnagnum, 622, 920, 925. 
Astrapotherium patagonicum, 622. 
Astrapotherium ephebicum, 920. 
Astrapotheridas, 621, 894, 925, 928. 
Atalapha, 351, 957. 
Atalapha bonaerensis, 351, 956. 
Atalapha villosissima, 352, 956. 
Alava, 103, 105, 347, 893, 891, 896, 898. 
Atelodus, 979. 
Atherura, 981. 
Atryptherium, 361, 371 , 182, 183, 185, 928, 960. 
Atryptherium hifurcatum, 360, 182, 925, 
Atryptheridae, 375, 482, 185, 190,893, 925, 928. 
Auchenia, 25, 62, 64, 66, 68, 71, 72, 81, 580, 583, 581, 588, 589, 591 > 
593-598, 937, 918-950, 953, 957, 970, 975, 979, 980. 
Auchenia guanaco, 11, 10, 11, 50, 51, 57, 58, 59, 66, 580. 
Auchenia mesolithica, 39, 10, 57, 588, 596, 597, 952, 986. 
Auchenia lama, 580, 596, 597, 952, 956. 
Auchenia lama fossilis, 580, 986. 
Auchenia intermedia, 580, 581, 584, 585, 596, 597, 910, 911, 986. 
Auchenia gracilis, 581-583, 585, 586, 596, 597, 910, 911, 986. 
Auchenia frontesa, 582, 583, 586, 910, 911, 986. 
Auchenia Castelnaudi, 583, 596, 597, 910, 911, 986. 
Auchenia cordubensis, 53, 581, 585, 596, 597, 952, 986. 
Auchenia ensenadensis, 585, 596, 597, 910, 911, 986. 
Auchenia lujanensis, 586, 596, 597, 910, 911, 986. 
Aucheuia paca, 587. 
Auchenia vicunna, 587. 
Auchenia vicuña, 597, 956. 
Auchenia Weddelli, 587, 591, 935, 910, 941, 986. 
Auchenia parallela, 595. 
Auchenia major, 596. 
Auchenia rninor, 595, 986. 
Aulaxinuus, 971. 
Aurochs, 920. 
Axis, 975, 980. 
Azara, 11, 25, 29, 31. 
Azara labiata, 5, 11, 38, 39, 18. 
Azara occidentalis, 11, 25, 18. 
U 
Baculites, 14, 16, 18. 
Balanus, 29, 39. 
Balaena, 888. 
Balaena australis, 888-890. 
Balaena dubia, 889. 
