A sample of chert rock containing what may be the remains of microorganisms that lived 3.4 billion years ago Dr. Manuel Reinhardt
As early as 3.4 billion years ago, life on Earth had formed diverse communities. Exceptionally preserved remains from the period reveal an ecosystem of microorganisms that sustained themselves in a range of ways.
The complexity of the ecosystem suggests life had already existed for hundreds of millions of years and began early in Earth’s history.
Manuel Reinhardt at the University…
