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Bradley, W.H.

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Microfossil of the oil shale of the Green River formation: Triangular pollen with very large apertures. Colorado or Utah. 1925. Plate 25, figure 2, U.S. Geological Survey. Professional paper 168. 1931.
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Microfossil of the oil shale of the Green River formation: spore similar to the conidia of Brachysporium sp. Colorado or Utah. 1925. Plate 20, figure 7, U.S. Geological Survey. Professional paper 168. 1931.
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Salt crystal cavities in a bed of marlstone suggesting interlock plates of anhydrite. Rio Blanco County, Colorado. circa 1925. Plate 6-B, U.S. Geological Survey. Professional paper 168. 1931.
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Polished transverse section of reef shown in Bradley photo 209; showing alternate algal and inorganic layers, the irregular light colored layers consists of the molds of Chlorellopsis coloniata and typical spongy algal deposit. The black and gray finely banded layers are of inorganic origin and owe their dark color to disseminated pyrite. Enlarged 3 diameters. Compare with the photomicrograph of thin section of part of the same reef shown in Bradley photo 242. Specimen is from near the base of the Tipton tongue of Green River formation in NW 1/4 16, T.24 N., R. 101 W. Sweetwater County, Wyoming. 1923. Plate 45-A in U.S. Geological Survey. Professional paper 154. 1929.
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Photomicrograph of a thin section showing in detail the individual cells of chlorellopis reis; the walls of each hollow sphere consist of a mosaic of moderately coarse grained calcite crystals. The dark matrix is microcrystalline calcite. Enlarged 100 diameters; Specimen originally from NE cor. sec. 1, T. 24 N., R. 100 W: Sweetwater County, Wyoming. 1923. Portion is Plate 32-A in U.S. Geological Survey. Professional paper 154. 1929.
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