Approximately 3.465 billion years old
The oldest cyanobacteria fossil found is about 3.5 billion years old, known as the Apex chert fossils from Australia. These fossils provide evidence of the early existence of cyanobacteria, which played a significant role in shaping the Earth's atmosphere and environment.
Fossils in layer 5 are less than 540 million years old.
Australia has three billion year old exposed land.
as old as you want.
The oldest fossils in Australia are 3.5 billion year old stromatolites. Stromatolites are layered accretions of prokaryotic microbes, most often made up of photosynthetic organisms. Stromatolites still live in Australia today.
Fossils from the Silurian Period are between 443.7 and 416 million years old.
The ocean floor
Fossils have been found with ages from a few tens of thousands of years old to roughly three billion years old.
The oldest known fossils are up to 3.5 billion years old.
Up to 35,000 years old.
Armour,Skull,Helix,Dome,Old Amber and Root Fossils.
Stromatolite fossils have been found in areas where there were warm, shallow seas. Some of these fossils are about 3 billion years old! Today, stromatolites are rare, but you can find them in hypersaline salt lakes and lagoons, where they are sheltered from grazing aquatic animals. Shark Bay, in western Australia, is one example.