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The earliest direct evidence of life are stromatolites found in 3.48 billion-year-old chert in the Dresser formation of the Pilbara Craton in Western Australia. [4] Several features in these fossils are difficult to explain with abiotic processes, for example, the thickening of laminae over flexure crests that is expected from more sunlight. [57]
Freshwater stromatolites are found in Lake Salda in southern Turkey. The waters are rich in magnesium and the stromatolite structures are made of hydromagnesite. [50] Two instances of freshwater stromatolites are found in Canada, at Pavilion Lake and Kelly Lake in British Columbia.
Shark Bay's waters, islands and peninsulas....have a number of exceptional natural features, including one of the largest and most diverse seagrass beds in the world. However, it is for its stromatolites (colonies of microbial mats that form hard, dome-shaped deposits which are said to be the oldest life forms on earth), that the property is ...
Ancient giant stromatolites used to be widespread in Earth’s Precambrian era, which encompasses the early time span of around 4.6 billion to 541 million years ago, but now they are sparsely ...
The 1.6-billion-year-old organisms are believed to have been the first predators on Earth.
This is a list of all extinct cyanobacteria genera that formed stromatolites. Collenia; Species Time period Location †C. frequens: Late Proterozoic: Australia
One, in the journal Nature Astronomy, found that the samples contained a diverse mixture of organic compounds. And the other, in the journal Nature, found that the samples contained minerals ...
The fossils in the Fig Tree Formation are considered some of the oldest known organisms on Earth, and provide evidence that life may have existed much earlier than previously thought. The formation is composed of shales , turbiditic greywackes , volcaniclastic sandstones , chert , turbiditic siltstone , conglomerate , breccias , mudstones , and ...