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[[left margin encircled]] 11 [[/left margin encircled]] as crackout material. Saw none silicified. Silicifination not common in bioherms at west end of Chinati hill. Biolerms overlie cgl. and also at 50 - 100' of shale and thin-bedded limestone in the area from 728 - Z and west. March 22. The loose specimens collected in Chinatis (728j?) are rather from the Alta fm. than from the Cibolo. Our collection this year is M2267 [[margin blue]] 738h [[/margin blue]] [[margin blue]] 738i [[/margin blue]] Sponge is M22671 - float on slope under largest bioherm, first one west of volcanic plug. [[margin blue]] 738j [[/ margin blue]] M22672 - Breccia zone on slope just west of large bioherm of M22 Slopes between 728 - Z & M22 thick bio. [[margin blue]] 738k [[/margin blue]] M22673 - About 25' below the Liosotella bed. [[margin blue]] 738-Z [[/margin blue]] M22674 - Beds with Liosotella about 125 above the uppermost bioherm. [[margin blue]] 738m [[/margin blue]] M22675 - About middle of thin-bedded member of Cibolo in a