Stromatolites have been around for over ... These bacteria build up columns by binding particles in the water. The cyanobacteria, that form these structures, photosynthesize and produce oxygen ...

Stromatolites are layered carbonate structures formed by photosynthetic cyanobacteria. Dating back more than 3.5 billion years, they are among Earth's oldest known fossils. These microorganisms ...

Ashley Martin of Northumbria University. The team examined ancient stromatolites preserved in southern Zimbabwe, which date back more than 2.5 billion years. Stromatolites are layered biochemical ...