Xeriphas

Xeriphas, or Xerophas, (PROSE: Time-Flight) was the homeworld of the psychic Xeraphin race.

History
In 140 million years BC, Xeriphas was caught in the crossfire of the Vardon-Kosnax War and devastated by radiation. The fleeing Xeraphin merged into a gestalt intelligence and left for Earth, which at the time was in its Jurassic period.

By the early 1980s Xeriphas had returned to their normal state, and the Fifth Doctor told them they could return. ended up trapped there. (TV: Time-Flight) He found the android Kamelion there, left over from previous invaders of the planet, and decided to use Kamelion for his own purposes. (TV: The King's Demons)

Iris Wildthyme had escaped from Xeraphas prior to visiting Hyspero. (PROSE: The Scarlet Empress)