Create your own foam head cutout with any photo in minutes at the lowest cost. Ships tomorrow. No extra fees. Done in minutes with the click of a button. Choose your photo and we will make it within a 18Ã24 size on quality foam board and water resistant vinyl, whichever is tallest or widest for your cutout big head.
Precambrian time includes Earth's history from birth up to 590 million years ago. That is, the Precambrian spans 90% of Earth's existence. Fossilized bacteria and blue-green algae show that primitive life existed at least 3,500 million years ago, and possibly earlier.
Precambrian time, period of time that extends from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago. The Precambrian represents more than 80 percent of the total geologic record. The stratigraphic chart of geologic time.