Complex sentence: The organisim could possibly be giant bacteria or unicellular alge grypania fossils start appering from 2 bya in the precambrian or more exactly the early paleoprotozoic period.
Split into simpler sentences: The organisim could possibly be giant bacteria or unicellular alge. Grypania fossils start appering from 2 bya in the precambrian or more exactly the early paleoprotozoic period.