in the Alzoldin — Sundance — Cambrian zvers are swamp or marginal lacustrine deposits which may mark local base levelling at about same time as southern lacustrine phase. All coals in question do come under the northern Lekota cycle SS. Miscellaneous notes. At Devils Canyon on Cheyenne R. canyon wells spectacular Injun Knees exposures showing the great local lateral variation typical of these rocks. Didn't get time for more than a look at this.