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100 PROFILE BC. Details of well exposed Tertiary beds In preceding section. 15' Yellowish clay + white tuff. #296 10' Somewhat indurated white and grey tuff. 25' Pale yellow clay. 5' Fine white tuff or tuffaceous clay 15' Yel- lowish or greenish clay. 4 �' Impure white tuff, much manganese 5' Yellow clay, weathering darker. 20' Irregularly R49 indurated white tuff. R48 5' Pure yellow clay 4 �' White tuff. 45' Clays and impure tuffs, white or pale colored, usually weathering pink or yellowish. PROFILE CONTINUES 25' Massive, Bentinite or faintly R47, #167, etc. {MANY FOSSILS bedded tuff, in lower chiefly yellowish 15' Bentonite R46 7' Irregular white or yellow Impure ash indurated{ABUNDANT 12' Massive tuff #166, #289 etc. FOSSILS yellowish tuff. R45 Benton. ash 1'-2' Hard white vesicular 171, ??? R44 R43 15'�Impure tuff, limonite con- etc. Lowest Mammal Bones yellow tuff. cretions found in place #179 R41, R42 4 �' Thin-bedded impure tuff, sand, R40 6' White tuff with Mn. Gravel (lava pebbles). R38 100' Grey shale, no fossils. CA�ADON VACA 101 292. Cf. Albertogaudrya, front part of skull, with dentition As #289. G.G.S. 12/22/30. 1 block. 28699 293. Large radius, most of ulna, frag. of humerus, other assoc. frags. As #287. G.G.S. 12/20/30. 1 pack. 28653 294. Cf. Thomashuxleya. Skull + jaws. As #289. G.G.S. 12/22/30. 1 block. 28698 295. Large ungulate. Complete right fore-limb, many vertebrae, ribs, etc. G.G.S. 12/29/30. 3 large blocks, 2 small blocks 3 sep. ribs + one package. See p. 106. (295-A) = 28905 296. Cf. Notostylops. Jaw. C.S.W. 1/3/31. Profile p. 100. 28503 297. 2 upper jaw frags. + 1 isol. tooth, found in excavating #295. G.G.S. 1/2/31. 1 pack. 298. Notostylops lower jaw, lacking anterior teeth. Same as #289. G.G.S. 12/29/30. 1 pack. 28603 299. Small notoung. l. jaw. Found in ex- cavating #295. G.G.S. 1/2/31. 1 pack. 28751 28868 300. Frag's crocodile skull + skeleton. As #289. G.G.S. 1/3/31. 1 carton. 3159