Scope and Contents Configuration of the Top of Precambrian Basement Rocks in Kansas, 1962 Generalized Block Diagram of Paradox Valley Anticline, Montrose County, Colorado Species Diversity Diagrams with Time Horizons-Twin Creek Limestone-Arapien Shale Surface to Subsurface Species Diversity Diagrams with Time Horizons of the Twin Creek Limestone-Arapien Shale from Western Wyoming to Central Utah Rock Formation Diagram Figure 2 Rock Formation Diagram...