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• Cryic Paleborolls These soils have a cryic soil temperature regime but are other- wise like Typic Paleborolls in their refined properties. These soils are the most extensive of the subgroups of Paleborolls, but they are not extensive in the United States. Theyare on mod- erately sloping or steep mountain slopes in Utah, Idaho, Montana and Colorado at elevations above 1,500 m, and they are used mostly for summer grazing. The Skylick Loam belongs to the Pachic Paleboroll subgroup. Pachic Paleboroll These soils have a thicker roollic epipedon than Typic Pale- 1 borolls. They are permitted but are not required to have mot- - tles and to have shallow ground water at some time during the - year. These soils occur at elevations above 1,500 m in mountain areas on very steep north or northeast slopes. They are rare, • and they are used mostly for summer grazing (1). The Lymanson, Splitro, and Winevada soil series belong to the great group Cryoborolls. Cryoborolls These are the cold Borolls. Summers are cool or short. Most of them in the United States are in the mountains of the western states. In addition to the mollic epipedon, a variety of other horizons are present. Cambic, argillic, and caIcic horizons are common; a natric hor- izon, a duripan, or an albic horizon is present in a few soils. These horizons are used to define the subgroups. Many of these soils that do not have a calcic horizon have a ca horizon below the Iambic or the argillic horizon. The Cryoborolls were formed mainly in late Pleistocene or Holo- . ' cene deposits or on surfaces of equivalent ages.