History of Palaeozoic Forests

The Earliest Life

The oldest fossils are approximately 3.5 Billion-year-old stromatolites. These are colonies of cyanobacteria (formerly called blue-green algae) which built real reefs. The oldest stromatolites were found in Australia.

The earliest life: the earth at the dawn of life, about 3.5 billion years ago - Field Museum Chicago

Early life: approximately 2 billion-years-old stromatolites - Worldwide Museum of Natural History

Two billion-year-old stromatolites from China - Sendai Museum, Japan

Stromatolites - Hunterian Museum, Glasgow

Fossil Cyanobacteria - University of California Museum of Paleontology, Berkeley

History of Palaeozoic Forests