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Show 197 Cretaceous in age. The palynomorphs and Canyon, the Carbon occurrence stratigraphic relationships of P. compressa, other fossils in the North Horn Formation of Price River County, were et al. reported by Fouch of P. compressa to indicate a (1987) who considered Cretaceous age for the interval that contained it. Beginning in 1993, H. J. Hansen conducted the coal sequence and a portion of the a underlying detailed subunit North Horn Formation at North Horn Mountain. Based record of magnetic susceptibility of the sediment transition, he suggested that the K-T boundary the base of the formation, which is positioned on stratigraphic study near the of the middle of the stratigraphic deposited throughout the K-T occurs about 20 at m a level 186 m above below the contact be tween the upper and lower coal sequence at North Horn Mountain (Hansen, 1995; Hansen et al., 1996). 4.2.2. Abbreviations K-T, Cretaceous-Tertiary. UUGG, University of Utah, Department of Geology and Geophysics. UMNH, Utah Museum of Natural History, vertebrate paleontology. 4.2.3. Location North Horn Mountain is located on the eastern edge of the Wasatch Plateau, west of the San Rafael Swell, in Emery County, Utah (Figure 4.1). It is |
