occurs to the Minnewaste, which is locally present in Edgemont NE. Saw it at G, where it is sandy, and again at place to W off map where it was more typical. Where no Minnewaste Fuson bottoms on first "white massive" sandstone. At G the Fuson chiefly claystone had big silic. tree trunk, foss. wood all over. Saw several polished pebbles in float, colored clasts as in D.T. area and some of those thin white sugary sands also common in D.T. area. Lakota. In Gerald's quad the Lakota can be subdivided with rather good consistency to its parts, but this doesn't apply outside his quad. At top are massive white SS. Locally 2 beds, below this a lustrous section of even-bedded SS, clay, sh & some very limy beds. The clasts have ostracods & [illegible] chevrophytes. Below this is thick SS., fine or massive brown weth commonly