File:Map of earth 3'000 million years ago showing Vaalbara and Ur continents.png - Wikipedia
The Continent of Ur Creathail by CaptainLizzz on DeviantArt
Geobiology - Vaalbara Supercontinent is believed to have formed 2.7 Ba along with or including a possible UR continent. Evidence … | Geology, World history, History
Ur (continent) - Wikipedia
It's a Continent by Astrid Madimba, Chinny Ukata - Audiobook - Audible.com