Distant past

This page covers events in the Doctor Who universe from the Big Bang (and perhaps earlier!) to the development of modern humans, about 100,000 BCE. For later events, see the pages for Early human history, the 15th Century and subsequent eras.

Timeline

 * 4 billion B.C.: Scaroth of the Jagaroth's ship explodes on primitive Earth. The explosion kills the other members of the crew who were the last survivors of the race, and splinters Scaroth into 12 bodies that exist in different times throughout human history, influencing and speeding up the development of human culture in an attempt to develop time travel and prevent the disaster. The explosion also causes the development of life on Earth, meaning that to prevent the explosion would leave the planet a desolate rock. (City of Death: Note: The dialogue in the show states "400 million years" several times, but this is clearly wrong.)
 * Unknown point (possibly the Silurian, Jurassic or Eocene period): The Silurians and Sea Devils develop an advanced culture, but are forced underground due to the arrival of the moon.