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Keywords: PisolitesConococheagueUpperCambrian.jpg en Pisolites from the Conococheague Limestone Upper Cambrian of eastern Pennsylvania; naturally eroded surface own Wilson44691 2010-06-30 Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html Pisolite Sedimentary rocks Carbonates Geology of Pennsylvania Cambrian life |