It was the Precambrian time period.
The Precambrian is a long period and just as Earth has many climates now, it had many then.
Precambrian eon4567.17-542 million years agoMesozoic era251-65.5million years agoSo precambrian came first...........
During the Cambrian period, life began to appear on the planet.
Over most of Precambrian time 80 percent of earths history-the only life forms are bacteria ,which appear about 3,500 million years ago. multiple-cells marine animals like spriggina appear at the end of the era
It was the Precambrian time period.
Precambrian is a geologic period that extends as back as 4.500 million years ago. Fossils are very rare from that period of time.
The Precambrian period was from 4600 million years ago to about 542 million years ago.
Precambrian time
The Precambrian Time
The Precambrian Era began in the time period 4600 and ended in 570.
The term "Precambrian" refers to the eon of geological time that predates the Cambrian period, which marks the beginning of abundant fossils in the rock record. It encompasses a vast span of time, roughly from the formation of Earth (about 4.6 billion years ago) to 541 million years ago.
The Precambrian time
Precambrian time - The period in the geologic time scale from the formation of the Earth to the beginning of the Palezonoic era, from about 4.6 billion to 543 million years ago.
You can't go back in time , but I'd take an assualt rifle . goodluck
welll ya see there was lots of little critters walking around and ya know its funyn cus that is it! ha
The Precambrian era spanned approximately 4 billion years, making it the longest geologic time period in Earth's history.