Pannotia (or Greater Gondwanaland and Vendian supercontinent) is a Neoproterozoic supercontinent. It may have existed during the Ediacaran period (~600 million years ago), 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. 