Arctica
Continent
Arctica, or Arctida is a hypothetical ancient continent which formed approximately 2.565 billion years ago in the Neoarchean era. It was made of Archaean cratons, including the Siberian Craton, with its Anabar/Aldan shields in Siberia, and the... Wikipedia
Formed: 2565 Ma
Today part of: Siberian craton; Slave Craton; Wyoming Craton; Superior Craton; North Atlantic Craton