sentences:  The Nubian Sandstone was deposited between the Lower Paleozoic and Upper Cretaceous, with marine beds dating from the Carboniferous to Lower Cretaceous.The Nubian Sandstone ranges in age from the Cambrian to Upper Cretaceous eras.Positioning of the paleoequator and paleolatitude at 20° S was derived from paleomagnetic data showing the Nubian was originally deposited in the paleoequatorial to subequatorial zone.