CARBONIFEROUS BIOSTRATIGRAPHY, NORTHEASTERN BROOKS RANGE, ARCTIC ALASKA: PROFESSIONAL PAPER 884
Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1975. Soft cover. Eleven microfossil assemblage zones are recognized in two sections of Carboniferous rocks in the northeastern Brooks Range, correlated with six other previously described sections, and tied to the Cordilleran and Eurasian standards. 29 pages with maps, tables, photomicrographs, references..... More