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4 Continuation downward of profile, p. 2. PROFILE A D 2. Probable Conformity {Highest hard tosquilla bed at clay this point. Tosquilla Clay and sand. Ap. Level of top of lava flow on opposite side of Ca-adon. (Upper) Main channel series, highly variable laterally. Mostly clay cg., shale partings. Hard beds weathering [Orange tuff] orange + vesicular. Partly x-bedded. Apparent disconformity } 15' Clay. Directly above lava flow, a very fine Local lava soapy green clay, eslsewhere flow more impure + mostly gray to yellow {Sharp but Fine white sand. plane contact. Gradual x-bedded sand + gravel, pebbles all sedimentary + up to 2' diam. Bed soft, not 'tosquilla.' 12' Somewhat {Local unconformity. mottled clay, pinkish Small relief. Below, gray in the middle, + yellow above. Local thin hard orange channel bed. 18' Yellowish clay and tuff. 8' Massive grey tuff. 6'-10' Yellowish clay. 0-4' Hard orange channel bed See p. 6. SPECIMENS. 5 COLI-HUAPI. CAMP ONE 1-100 G.G.S. Field Book. See p.53 for other specimens. 4. Astrapothere tusk. Not place; but from Pyrotherium horizon. 29566 5. Ungulate teeth and jaw fragments, found in place. Locality about 1 mile west of end of main barranca, far beneath large lava flow. An isolated exposure with about 20' of white and gray tuff above apparently barren buff clays. Lower in this small ca-adon a thick series of argiles fissilaires type is exposed, nearest about 1/8 mile and apparently little below this tuff. Specimen from 10'above buff clays. G.G.S. 10/15/30. 1 package. 28766.7 6. Isolated mammal + turtle fragments. Not in place, but from same bed + locality as 5. G.G.S. 10/15/30. 1 package. UPPER BEDS � CA"ADON A, ETC. 7. Complete interathere skull. 'Ca-adon A,� west end of barranca. In place. See profile, p. 2-3. G.G.S. 10/15/30. 1 package. 29651 8. cf. Pachyrucos. Lower jaws, vertebrae, most of fore-limbs. In place. See profile, p. 2-3. G.G.S. 10/15/30. 1 Block, 1 package. 29686