1. Pipeline Shale Member type section, Brushy Canyon Formation (3 l'50'5"N, 104'50'
          5"W). 3.5 mi (5.8 km) SSW of EI Capitan, 0.4 mi (0.7 km) along EI Paso Gas
          Company right-of-way pipeline road, west of junction with U.S. 62/180, Culberson
          County, Texas.  Samples from basal phosphatic interval with carbonate concretions
          containing abundant ammonoids.  Private ranch, permission to collect required.