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64 11/24/30 Excursion with Dr. Feruglio to Cerro Cresta (local name) or Cerro Abigarrado (name given by Cabrera) or Cerro Colorado de Purichelli (Feruglio). N. end of Pampa Mar�a Ssma. Here the section from upper Chubutiano to top of Pehuenche or base of Argiles fissilaires is well exposed, but there is no Tertiary. Variegated, brilliantly colored clays and channel deposits with petrified Upper wood but no bones Banco Negro PEHUENCHE Basal Banco Negro Banco Verde, with wood + shark teeth.} SALAMANQUEANO Fine clay with plants = Lignitifera Basal cg., shark teeth etc. Clays, ss, cg. With }CHUBUTIANO dinosaurs in channels The Pehuenche and Chubutiano are closely similar but the Pehuenche has the characteristic "black banks" and no dinosaurs have been found in it, while here the Chubutiano is coarser in ????, rather less vivid in coloring, + has numerous dinosaur bones. They are separated by the marine and estuarine Salamanqueano, of characteristic green color. COLI-HUAPI 65 256. Large lower jaw. Profile p. 46. J.H. 11/20/30. 1 block, 1 pack. 28696 257. Two small jaw frags. Profile p. 46. J.H. 11/19/30. 1 pack. 28860-1 258. Two large molars. Level of #256 but not in place. J.H. 11/21/30. 1 pack. 28651 KM. 170 Northern slope of the Valle Hermoso where RR from Comodoro Rivadavia to Colonia Sarmiento descends into the Cuenca de Sarmiento, near Kilometer 170 of the R.R. Profile O, p. 58. 259. Small lower jaw, one side, all teeth. Profile, p. 58. G.G.S. 11/23/30. 1 pack. 28599 260. Large jaw. Profile p. 58. J.H. 11/23/30. 1 pack. 28667 261. 4 isolated specimens. As #259. J.H. 11/23/30. 1 pack. 28670 28862-4