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ACTAS DE LA ACADEMIA NACIONAL DE CIENCIAS 
Fág. 
Odontoceras incompositum Retowski sp.79 
Odontoceras fallax nov. sp. 
Odontoceras nodulosum nov. sp. 
Odontoceras curviplex nov. sp. 
. . . 81 
Odontoceras planum nov. sp. 
Odontoceras raripartitum nov. sp. 
Odontoceras ratula nov. sp. 
. . . 82 
Odontoceras malarguense nov. sp. 
Odontoceras permulticostatuni nov. sp. 
... 84 
Odontoceras A. perornatum Retowski sp. 
... 85 
Hoplites Neumayr emend. Steuer. 
. . . 85 
Hoplites vetustas nov. sp. 
Iloplites subvetustus nov. sp. 
Hoplites Wallichi Gray sp. 
. . . 87 
Iloplites mendosánus Behrendsen. 
... 88 
Iloplites malbosiformis nov. sp. 
Hoplites aff. Ilookeri Blaneord sp. 
... 89 
Iloplites quadripartitus nov. sp. 
. . . 89 
Perisphinctes toncochensis nov. sp. 
Perisphinctes colubrínus Reinecke sp. 
Perisphinctes densistriatus nov. sp. 
. . . 91 
Perisphinctes Roubyanus Fontannes. 
. . . 92 
Perisphinctes aff. indoqermanus Waagen 
. . . 92 
Perisphinctes fasciculatus nov. sp. 
. . . 92 
Perisphinctes nodiliferus nov. sp. 
. . . 93 
Holcostephanus Bodenbenderi nov. sp. 
. . . 94 
Holcostephanus depressus nov. sp. 
. . . 94 
Holcostephanus Grotei Oppel sp. 
. . . 95 
Holcostephanus fraternas nov. sp. 
. . . 95 
Stephanoceras Damesi nov. sp. 
. . . 96 
Aspidoceras cyclotum Oppel sp. 
. . . 98 
Aspidoceras euomphalnm nov. sp. 
. . . 98 
Aspidoceras andinum dov. sp. 
. . . 99 
Aspidoceras aff. Haynaldi Herbich. 
. . . 100 
Aspidoceras cienequitiense nov. sp. 
. . . 101 
Aspidoceras nov. sp. indet. 
. . . 101 
Oppelia perlaveis nou. sp. 
. . . 102 
Oppelia nimbata Oppel sp. 
. . . 103 
Oppelia perglabra nov. sp. 
. . . 104 
Oppelia sp. 
. . . 104 
Haploceras falculatum nov. sp. 
. . . 104 
Lytoceras cf. sutile Oppel sp. 
. . . 105 
Lytoceras sp. . . 
Harpoceras Bodenbenderi nov. sp. 
. . . 106 
Nautilus perstriatus nov. sp. 
. . . 107 
Natilus cf. subinflatus d’Orbigny . 
. . . 107 
Aptychus sp. 
. . . 108 
Resultados paleontológicos.. 
. . . 108 
