A potential competitor still classified in the Ustollic subgroup is the Harbord , series. Balon, Decolney and Gaddes soils are noncalcareous throughout. Blancot and Mentmore soils have hues of 2.5Y. Bowbac, Cushman, Gaddes, Gapbutte, Gapmesa, Hagerman, Pokeman, Pugsley, and Spangler soils have a lithic or paralithic contact at depths of 20 to 40 inches. Cambria soils are less than 10 inches deep to the base of the Bt. Cerrillos and Spenlo soils have calcic horizons and should be classified Calciargids.
Doakum soils have more sand and less silt in the control section.
Los Alamos soils have pumice and ash in the control section. Oelop soils have Bt horizons with a base less than 40 inches deep. Palacid soils have calcium carbonate accumulations at 10 to 15 inches. Penistaja, Redpen, and Yenlo soils have more than 40 percent sand. Quagwa soils have mean annual soil temperatures of 54 to 57 degrees F. Sundance and Teckla soils have a lithologic discontinuity at 20 to 40 inches.