USNM Loc. 732z.  Road Canyon Formation (30'14'24"N, 103'27'0"W). 1.36 mi (2.3 kin)
          N50'W o@, Old Payne Ranch site, 1.2 mi (2 km) N2'W of hill 4806, Monument Spring
          quadrangle. (Description from Cooper and Grant, 1977.) Private ranch, permission to
          collect required.