What are the oldest fossils on Earth.?
✅ Answers Answerer 1 3.5 billion year old fossils of bacteria that lived before there was oxygen on Earth. Those things still live today in anaerobic environments. Source(s): http://www.sciencedaily.com/releases/201… Answerer 2 rocks I think in Australia, maybe else where bacteria layers calledstromatolitess” ( I think) reliably dated at over 1 billion = 1,0 years old, … Read more