Pannotia
Pannotia (also called Greater Gondwanaland or the Vendian supercontinent) is a Neoproterozoic supercontinent. It may have existed during the Ediacaran period (~600 mya), to the end of the Precambrian (about 541 mya). After that, it split into smaller continents. The small ones were Laurentia, Siberia and Baltica, with the main landmass Gondwana south of them.