The Precambrian or Pre-Cambrian, sometimes abbreviated pЄ, is the largest span of time in Earth's history before the current Phanerozoic Eon, and is a Supereon ...
THE PRECAMBRIAN ERA The Precambrian Era. The name means: "before the Cambrian period." This old, but still common term was originally used to refer to the whole ...
Learn about Precambrian time and the appearance of the first life on Earth and get information, facts, and more about prehistoric life from National Geographic.
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 ...
Precambrian. In geologic time, Precambrian time encompasses the time from Earth's formation, approximately 4.5 billion years ago, until the start of the Cambrian ...
An intro to the Precambrian era, includes a review of each of the geological sub-divisions and the various forms of life that lived during this time
The Precambrian (or Pre-Cambrian) is an interval of geologic time of roughly 4 billion years, beginning with the formation of Earth around 4500 million years ago (mya ...
The Precambrian lasted nearly 4,000 million years and began with the formation of the Earth and culminated with the Cambrian Explosion.
We may take our own country as a region where a good development of the Precambrian rocks occurs.
The Precambrian is the name given for the first super eon of Earth’s history. This division of time — about seven-eighths of Earth's history — lasted ...