Stromatolite fossils have been found in areas where there were warm, shallow seas. Some of these fossils are about 3 billion years old! Today, stromatolites are rare, but you can find them in hypersaline salt lakes and lagoons, where they are sheltered from grazing aquatic animals. Shark Bay, in western Australia, is one example.
The are examples of stromatolites still living. They are not extinct.
The stromatolites are the layered mounds, columns, and the sheet-like sedimentary rocks.
Stromatolites.
Stromatolites
Stromatolites
stromatolites
The prokaryotic cells that built stromatolites are classified as cyanobacteria. Cyanobacteria are photosynthetic bacteria that played a crucial role in the formation of stromatolites, which are layered structures formed by the trapping and binding of sediment by microbial communities.
they are aerobically anaerobic
stromatolites
The oldest fossils in Australia are 3.5 billion year old stromatolites. Stromatolites are layered accretions of prokaryotic microbes, most often made up of photosynthetic organisms. Stromatolites still live in Australia today.
The most common Precambrian fossils are stromatolites. These are layered structures formed by the growth of cyanobacteria, also known as blue-green algae, in shallow water environments. Stromatolites are important in understanding early life on Earth.
Stromatolites were much more abundant on the planet in Precambrian times which means that fossils found around stromatolites are typically from the Precambrian era.