Pseudo-stromatolite, extra largeLocale: Morocco Approx dimensions: 8 x 6 x 4" Approx weight: 8 lbs A stromatolite is a sedimentary fossil structure made by prehistoric bacteria colonies, typically cyanobacteria. Stromatolites in fact are still living and forming in some parts of our world today, including Australia, and are among the earliest forms of lifeand fossilson our Earth. The fossils form in shallow water conditions of lakes or salt water shores. First, cyanobacteria grow in