Stromatolites are layered mounds of calcium carbonate that were deposited by algae, particularly cyanobacteria, during the Precambrian time. They are among the oldest evidence of life on Earth and provide important information about the early biosphere and the conditions of ancient environments.
What are stromatolites?
soft-bodied organisms resembling the types of jellyfish, worms, and coral that live in the oceans today
eukaryotes with nuclei that were formed by a single cell or many cells during the Precambrian time
layered mounds of calcium carbonate that were deposited by algae during the Precambrian time
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