ELI5: Explain Like I'm 5

Silurian (Doctor Who)

Okay, so you know how there are different time periods, like when the dinosaurs lived a really long time ago? Well, the Silurian is another time period that happened before people were even around. It was a time when there were these really cool reptile-like creatures called Silurians that lived in the Earth.

In Doctor Who, the Silurians are creatures that look like reptiles and they were shown to be really smart and even had their own civilization. They were alive a really long time ago, but they also appear in the show as being woken up and coming back to life in the present day.

So basically, the Silurians are creatures that existed a long time ago, but now they're in Doctor Who as an alien species that's really interesting and important to the show.