Jabruson / Stromatolites, Hamelin pool, Shark Bay, Western Australia. Fossil rock formations caused by bacteria and algae.
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Doug Perrine / Living Stromatolites (Limestone accretion formed by cyanobacteria} Shark Bay, Western Australia
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Hiroya Minakuchi / Stromatolites, the oldest life form that still exists today, Hamelin Pool, Shark Bay, Western Australia
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Fred Bavendam / Tourist photographing stromatolites, colonies of blue-green algae, the oldest life form that still exists today fossils dated to over three billion years ago, Hamelin Pool, Western Australia
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GEORGETTE DOUWMA / Stromatolites. Hamelin Pool, Shark Bay, Western Australia
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GEORGETTE DOUWMA / Stromatolites - fossilsed cyano bacteria (the oldest forms of life on Earth) which lived together in communities forming the structures called stromatolites, Hamelin Pool, Shark Bay, Western Australia
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John Cancalosi / Stromatolite fossil in Biwak iron formation. Minnesota, USA. 2.1 billion yrs old.
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Tim Edwards / Stromatolites (oldest known forms of life). Nambung NP, Western Australia
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Steven David Miller / Stromatolites, Hamlin Bay Shark's Bay Western Australia
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Jabruson / Stromatolites created by cyanobacteria & blue-green algae. Hamelin pool, Australia
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Jabruson / Stromatolites created by cyanobacteria & blue-green algae. Hamelin pool, Australia
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Hiroya Minakuchi / Stromatolites at low tide, colonies of blue-green algae, the oldest life form that still exists today. Fossils dated to over three billion years ago, Shark Bay, Western Australia, Australia
