-178- Section 19 contd. of unit), Smaller Foraminifera, sili- ceous sponge spicules, Bairdia sp., Bairdiacypris? sp., Cavellina? sp. . . . . . . 53 31. Covered . . . . . . . . . . . . . . . . . . 64 30. Calcarenite, yellow-brown weathering, well cemented, interbedded with shales 50 yards to the west. . . . . . . . . . . . . . 16 29. Calcirudite, yellow-brown weathering, 1 1/2 inches in diameter pebbles becoming well sorted and coarse sand size near top, planar upper surface, coll. 19-29, Pseudo- schwagerina texana, Schwagerina pugunculus, Triticites ventricosus (reworked) . . . . . . . 3 1/2 28. Covered . . . . . . . . . . . . . . . . . . 20 27. Calcirudite, similar to unit 25 . . . . . . . . 26 26. Covered, probably poorly cemented limestone . . . . . . . . . . . . . . . . . . . 11 25. Calcirudite, gray weathering, brown mottled patches with organic fragmental material, beds 1 to 3 feet thick, upper surfaces of beds are finer and better sorted, coll. 19-25, Pseudoschwagerina texana?, P. beedei, P. uddeni, Schwagerina pugunculus . . . . . . . . . . . 27