Rodinia

In geology, Rodinia (from the Russian "Родить", rodit, meaning "to give birth") is the name of a supercontinent, a continent which contained most or all of Earth's landmass. According to plate tectonic reconstructions, Rodinia existed between 1.1 billion and 750 million years ago, in the Neoproterozoic era. It formed at ~1.0 Ga by accretion and collision of fragments produced by breakup of the older supercontinent, Columbia, which was assembled by global-scale 2.0-1.8 Ga collisional events. Rodinia has entered popular consciousness as one of the two great supercontinents of earth history, the other being Pangaea.