ABSTRACT-Upper Paleozoic Cephalopoda of west-central Patagonia are revised, based on reexamination of
   all available specimens and of most localities in Chubut Province, Argentina.  Nautiloidea Orthocerida are
  represented by Sueroceras irregulare Riccardi and  Sabattini, S.? chubutense (Closs), Sueroceras sp., and
  Mooreoceras zalazarense Sabattini and Riccardi and Pseudorthoceratidae gen and sp. indeterminate;
  Nautilida by Amosiceras reticulatum new genus and species; and Ammonoidea Goniatitida by Glaphyrites
  taboadai new species and Glaphyrites sp.  This fauna belongs to the Cisuralian Sueroceras irregulare and
  Mooreoceras zalazarense assemblage zones.