Afterimage

Afterimage was a term used by the Eleventh Doctor to describe what remained of the Alliance following Total Event Collapse. As discovered by himself and Rory Williams in the Underhenge, several members of the Alliance, including a pair of Daleks, had been reduced to stone fossils. As the Doctor explained to Rory: (TV: The Big Bang) "History has collapsed. Whole races have been deleted from existence. These are just like afterimages. Echoes. Fossils in time. The footprints of the never-were."

- The Eleventh Doctor