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96 PROFILE BA Camp #3, opposite camp. Southern rim of Pampa Pelada, in upper part of Ca�adon Vaca. Top of Exposure 50' Yellowish clays and tuffs. Some bone fragments. 9' Irregularly bedded, often nodular light tuff + yellow clay 30' Yellowish clays and soft tuffs. Little manganese. No bones in this section 10' Yellowish impure tuff + MANY BONES }285, 286. clay, some manganese LOCALLY 8' yellow clay with innumerable A very characteristic but purely local mn. concretions, round, size bed- R51. of a praton walnut 10' yellowish clay, some manganese 8' Impure yellowish tuff + clay, nodular, 15' Yellowish tuffaceous some mn. concretions clay weathering gray 5' White tuff 10' White 5' Yellowish tuffaceous to yellow clay, weathering tuf' clay 25' white gray. 23' White to yellow tuffaceous tuff and tuffaceous clay and nodular clays. Manganese. tuff. CORRESPONDING Yellow LEVELS 25' Massive impure tuffaceous clay. yellow tuff, grading into tuffaceous clay. 15' Alternating yellowish tuffaceous clays and yellowish white or greenish impure hard 16'Massive tuffs. 164, 287, etc.{ white to buff tuff. Many bones 13' Impure yellowish concretionary tuffs. 9' Brownish or greenish tuffaceous clay, some gypsum fibres and manganese. 12'(+) Massive white tuff. Bottom of Exposure. CA�ADON VACA 97 CAMP 3 Dec. 18, 1930 ? Feb. 9, 1931 Camp slightly over a league (by road) north of Cerro Salp� at a manantial in a small zanj�n leading into Ca�ad�n Vaca. The beds worked from this camp are almost straight across Ca�ad�n Vaca, white badlands visible from the hill above the manantial. They are on the southern slope of the Pampa Pelada, half a league more and less east of the road which crosses the ca�adon and ascends to the pampa Pelada where it leads on the one hand to Sierra Chaira, on the other to Paso Nicmann ( + Comodoro). General region indicated to us by Feruglio, + part of the large area along + near the Chico shown on Ameghino's Notostylopense map. It is also shown on Windhausen's geologic map, which is very erroneous in detail however, as he shows "Eocene" below Cretaceous on the south side of the Ca�ad�n, requiring a complex + non- existent structure. Except for those near the Puesto Van Wyk, the beds worked from here are in Lote 3, Fracci�n D, Secci�n D1.