May have been more resistant to UV radiation because of sediment covering. First fossil eukaryotic cells appeared by at least 1.6 - 1.4 by. Eukaryotes are cells which have a nucleus and organelles . They are larger than prokaryotes. Ediacaran Fauna Metazoans appeared in the Late Proterozoic.
Metazoans are multicellular animals with various types of cells organized into tissues and organs.
Preserved as impressions of soft-bodied organisms in sandstones. May be related to the accumulation of oxygen in the atmosphere. Mawsonites, similar to jellyfish, Australia. Dickensonia costata, segmented worm. Early shelly material is made of calcium carbonate and calcium phosphate.