| A Google Maps street car perspective that I edited and processed through photoshop. A road in White Pine County, Nevada, passes through the lower Permian Riepe Spring Limestone. Every rock in view, to the bend in highway up ahead, belongs to the fossiliferous Riepe Sping Limestone, which consists of 275 to 350 feet of generally fine to moderately crystalline medium to dark gray bioclastic limestone. Prominent limestone ledges often produce prodigious numbers of coral specimens; fusulinid coquinas common. Brachiopods, bryozoans, conodonts (minute tooth-like structures, unrelated to modern jaws, that helped process food in an extinct lamprey eel-like organism), and crinoid stems are locally abundant, as well. |