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Stromatolites
Stromatolites or stromatoliths
-26.435, 114.2
Field Notes
Description:
They are layered accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains by biofilms of microorganisms, especially cyanobacteria (commonly known as blue-green algae).[1] Stromatolites provide some of the most ancient records of life on Earth.
Habitat:
They are found in hypersaline lakes and marine lagoons where extreme conditions due to high saline levels exclude animal grazing. One such location is Hamelin Pool Marine Nature Reserve, Shark Bay in Western Australia.
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