0 from or referring to the earliest period of time, between about 4,600 and 543 million years ago, from when the earth was formed until the first simple forms of life appeared: --
1 the earliest period of time, between about 4,600 and 543 million years ago, from when the earth was formed until the first simple forms of life appeared: --
Algae are found in the fossil record dating back to approximately 3 billion years in the Precambrian.
The Precambrian refers to a stretch of time spanning from the inception of the Earth approximately 4.5 billion years ago to about 540 million years ago.
The project will adopt a case-study methodology and will focus on scientific studies of the Precambrian .
Precambrian rocks outcrop over vast areas of continental interiors.
It is one of the most comprehensive studies for any Precambrian interval.
The development of the Atlantic began as far back as Precambrian times.