1016 
MAMÍFEROS FÓSILES ARGENTINOS 
Hyotherium, 967, 971, 976. 
Hypposhyus, 960. 
Hypertragulus, 970- 
Hypisodus, 970. 
Hypsiprymnidae, 268,891, 896. 
Hypsiprymnus, 276, 898. 
Hypudcfius dasytrichos, 112. 
Hyracidae, 893. 
Hyracodon, 970. 
Hyracodontherium, 966. 
Hyracodontidae, 894. 
Hyracoidea, 355, 491, 893, 896. 
Hyracotherium, 961, 966. 
Hyrax, 235, 355, 363, 366, 367, 373, 371, 416, 426. 
Hyrnchius, 493, 496, 961, 966. 
Hyrachius agcarius, 495, 496. 
Hystricidae, 123, 894. 
Hystricomorpha, 108, 121, 122, 157, 262. 
Hystrix, 971, 976, 979, 981. 
Hystrix coendú, 130. 
Hystrix couy, 130. 
Hystrix insidiosa, 130. 
Hystrix prehensilis, 130. 
I 
Icochilus, 19, 465, 469, 475, 476, 481, 482, 928, 960. 
Icochilus excavatus, 471-473, 925. 
Icocliilus extensas, 470, 471, 473, 925. 
Icochilus rotundatus, 471, 473, 925. 
Icochilus undulatus, 471, 473, 925. 
Icticyon, 310, 312, 334. 
Icticyon major, 310, 334, 985. 
Icticyon rufus, 334. 
Icticyon venaticus, 310, 985. 
Ictitherium, 977. 
Ictops, 963. 
Ictyodorhulites, 674. 
Imparadigitata, 374. 
Indrodon, 959. 
Insectívora, 263, 894, 896, 898, 963, 967, 969, 971, 977, 981. 
Inleratheridae, 48, 375, 465, 476, 481, 490, 893, 925, 928, 930, 933» 
935, 937. 
Interatherium, 19, 214, 216, 359 , 368 , 372-374, 465, 467-469, 475» 
481, 482, 487, 928, 960. 
Interatherium rodens, 359, 465, 467, 468, 925. 
Interatherium supernum, 359, 467, 468, 925. 
Interodon, 666, 673, 680-683, 733, 932, 968. 
Interodon crassidens, 680, 681, 733, 931. 
Ischyromys, 971. 
Isiodoromys, 971. 
Ithygrammodon, 961. 
.J 
Jacchus grandis, 101. 
Jacchus penicillatus, 101. 
Jaculus, 976, 980. 
K 
Kerodon, 257. 
Kerodon Kiugi, 225. 
Kerodon major, 221. 
Kerodon minor, 221. 
JL 
Lagidium, 168, 188, 189, 211, 212, 957. 
Lagidium peruanum, 189, 955, 
Lagenorhynchus ceruleo-albus, 885. 
Lagomorpha, 107, 108. 
Lagomyidae, 894. 
Logomys, 981. 
Lagostomus, 64, 125, 146, 148, 168, 171-173, 175, 181, 185, 187, 
188, 193-195, 208-212, 370, 901, 903, 904, 927, 928, 932, 936, 
947- 918, 950, 953, 957, 963, 967, 971, 976, 981. 
Lagostomus angustidens, 33, 176, 177, 178, 182, 183, 187, 188. 
Lagostomus autiquus, 177, 178, 184, 187, 188. 
Lagostomus braziliensis, 186, 983. 
Lagostomus brevifrons, 176. 
Lagostomus brevipes, 176. 
Lagostomus cavifrons, 69, 177, 178, 180-182, 187, 188, 938, 913, 
984. 
Lagostomus chinchilla, 189. 
Lagostomus debilis, 66, 177-180, 182, 187, 188, 938, 943, 983. 
Lagostomus fossilis, 176, 179. 
Lagostomus hoterogenidens, 68, 69, 177, 178, 182, 184, 187, 188 f 
938, 943, 984. 
Lagostomus incisus, 26, 75, 177, 178, 182-184, 187, 188, 934. 
Lagostomus interrnedius, 184. 
Lagostomus laniger, 189. 
Lagostomus lateralis, 177, 178, 185, 187, 188, 921. 
Lagostomus minimus, 177, 178, 180, 182, 184, 187, 188, 913, 984. 
Lagostomus minutus, 938. 
Lagostomus pallidens, 177, 178, 185, 187, 188, 903, 929. 
Lagostomus primigenius, 177, 178, 186-188, 924. 
Lagostomus spicatus, 177, 178, 184, 187, 188, 931. 
Lagostomus tricodactylus, 40, 41, 51, 53, 56-59, 61, 178-184, 187 
188, 210 , 943, 951, 955 , 983. 
Lagostomus tricodactylus f. angustidens, 179. 
Lagostomus tricodactilus fossilis, 179. 
Lagostomus vizcacha, 179. 
Lambdotherium, 961. 
Laniodon, 680, 702, 715, 948, 950, 978. 
Laniodonrobustus, 716, 940, 945, 987. 
Lasiuromys, 152, 153. 
Lasiuromys villosus, 151, 983. 
Lamuridae, 893. 
Lemuravus, 959. 
Leporidae, 108, 194, 955, 958. 
Leptarctos, 977, 979. 
Leptauchenia, 970. 
Lepthyaena, 977. 
Leptictis, 971. 
Leptobos, 975, 979, 980. 
Leptodon, 974. 
Leptotherium, 614. 
Leptotherium magnum, 614. 
Leptotherium minus, 614. 
Lepus, 108, 369, 372, 957, 976, 979, 981. 
Lepus braziliensis, 108, 955, 984. 
Lepus aíl., braziliensis, 108. 
Lepus tapeti, 108. 
Lestodon, 34, 61, 71, 75, 661, 663, 664, 680, 681, 691, 692, 701, 
702-711, 715-718, 720, 721, 736, 737,741,745, 921, 932, 937, 
948- 950, 968, 973, 978, 996. 
Lestodon antiquus, 714, 717, 931, 935. 
