. . "Greenhorn Formation" . "Greenhorn Limestone formation" . "Greenhorn Limestone" . "grey, rhythmic, chalky shales" . . . . . . "Greenhorn Limestone" . "Greenhorn Calcareous Member" . . . "Greenhorn" . . . . . . . . . . "Greenhorn lithologic character" . . . . "Greenhorn Sea" . . "Lincoln \\\"Marble\\\"" . . "Greenhorn marine cycle" . . . "Greenhorn cycle" . . "Greenhorn Cycle" . "lower Greenhorn" . . .