Top--Graptolites from an upper Ordovician section of the middle to upper Ordovician Vinini Formation in Eureka County, a number of miles west of the western borner with White Pine County, Nevada. Called scientifically Metabolograptus extraordinarius. Photograph courtesy Charles E. Mitchell; I edited and processed the image through photoshop.

Bottom--Latex casts of graptolites (revealing original three-dimensional morphology of the extinct colonial animal) from a late middle Ordovician section of the middle to upper Ordovician Vinini Formation. Genus-species is Climacograptus bicornis. Photograph courtesy Rueben J. Ross and William B. N. Berry; I edited and processed the image through photoshop.