- The Precambrian is the earliest part of Earth's history, extending from about 4.6 billion years ago to the beginning of the Cambrian Period12. It represents more than 80 percent of the total geologic record2. The Precambrian is the time and geology dated before the Phanerozoic, and it coincides with the first appearance of the fossils of hard-shelled animals3.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The Precambrian (/ priˈkæmbri.ən, - ˈkeɪm -/ pree-KAM-bree-ən, -KAYM-; or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon.en.wikipedia.org/wiki/PrecambrianPrecambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, approximately 541 million years ago. The Precambrian represents more than 80 percent of the total geologic record.www.britannica.com/science/PrecambrianDef. "the time and geology dated before the Phanerozoic" or the "eon (or supereon) and rock formations dated before 541.0±1.0 million years ago, coinciding with the first appearance of the fossils of hard-shelled animals" is called the Precambrian.en.wikiversity.org/wiki/Geochronology/Precambrian
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Precambrian - Wikipedia
WebThe Precambrian (/ p r i ˈ k æ m b r i. ə n,-ˈ k eɪ m-/ pree-KAM-bree-ən, -KAYM-; or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's …
See results only from en.wikipedia.orgPhanerozoic
The Phanerozoic is the current and the latest of the four geologic eons in the …
Had
The Hadean (/ h eɪ ˈ d iː ə n, ˈ h eɪ d i ə n / hay-DEE-ən, HAY-dee-ən) is the first …
Precambrian | Life, Climate, & Facts | Britannica
WebPrecambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, approximately 541 million …
Precambrian Time Information and Prehistoric Facts - National …
WebLearn about the earliest period of Earth's history, from 4.5 billion to 542 million years ago, when life evolved from bacteria to multicelled animals. Discover the fossil record, the …
Cambrian - Wikipedia
WebThe Cambrian ( / ˈkæmbri.ən, ˈkeɪm -/ KAM-bree-ən, KAYM-; sometimes symbolized Ꞓ) is the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. [5] . The …
Precambrian - Simple English Wikipedia, the free encyclopedia
WebPre-cambrian (or Precambrian) is a term used to describe the eons before the Cambrian. It lasted from about 4.567 billion years BC to about 542 million years BC. It starts with the …
Precambrian | Natural History Museum
WebLearn about the Precambrian, the longest period of Earth's history, when life originated and diversified. Explore meteorites, rocks, minerals, and fossils that reveal the evolution of an …
Precambrian - Ancient Life, Fossils, Eons | Britannica
WebIt is now known that Precambrian rocks contain evidence of the very beginnings of life on Earth —which, based on the age of the rocks that contain the oldest evidence of life, took …
Precambrian time and its division | Britannica
WebPrecambrian time, Interval of geologic time from c. 4.6 billion years ago, the age of the oldest known rocks, to 541 million years ago, the beginning of the Cambrian Period. This …
Precambrian - New World Encyclopedia
WebThe 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) and …
The Precambrian - University of California Museum of Paleontology
WebThis stretch of time is called the Precambrian. To speak of "the Precambrian" as a single unified time period is misleading, for it makes up roughly seven-eighths of the Earth's …
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