- Proterozoic is a geological era that represents the period before the first abundant complex life on Earth12. The name Proterozoic comes from the Greek "earlier life"2. The Proterozoic Eon extended from 2500 million years ago to 541 million years ago2. It is the most recent part of the former Precambrian12.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Proterozoicul este o eră geologică reprezentând perioada dinaintea primei vieți complexe abundente de pe Pământ. Era proterozoică se extinde de acum 2500 milioane de ani până la aproximativ acum 500 milioane de ani și este cea mai apropiată parte din timpul Precambrian.ro.wikipedia.org/wiki/ProterozoicIt was a period before the first abundant complex life on Earth. The name Proterozoic comes from the Greek "earlier life". The Proterozoic Eon extended from 2500 million years ago (mya) to 541 mya. It is the most recent part of the former Precambrian.simple.wikipedia.org/wiki/Proterozoic
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The Proterozoic is the third of the four geologic eons of Earth's history, spanning the time interval from 2500 to 538.8 Mya, the longest eon of the Earth's geologic time scale. It is preceded by the Archean and followed by the Phanerozoic, and is the most recent part of the Precambrian "supereon". The Proterozoic is … See more
One of the most important events of the Proterozoic was the accumulation of oxygen in the Earth's atmosphere. Though oxygen is believed to have been released by photosynthesis as far back as the Archean Eon, it could not build up to any significant degree … See more
The Proterozoic Eon was a very tectonically active period in the Earth's history.
The late Archean Eon to Early Proterozoic Eon corresponds to a period of increasing crustal recycling, suggesting subduction. Evidence for this … See moreThe Proterozoic can be roughly divided into seven biostratigraphic zones which correspond to informal time periods. The first was the Labradorian, lasting from 2.0–1.65 See more
• "Proterozoic eon". Palaeos.com. Archived from the original on 2 July 2007.
• "Proterozoic". chronostratigraphy scale. See moreWikipedia text under CC-BY-SA license Mesoproterozoic - Wikipedia
The Mesoproterozoic Era is a geologic era that occurred from 1,600 to 1,000 million years ago. The Mesoproterozoic was the first era of Earth's history for which a fairly definitive geological record survives. Continents existed during the preceding era (the Paleoproterozoic), but little is known about them. The continental masses of the Mesoproterozoic were more or less the same ones …
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Neoproterozoic - Wikipedia
Neoproterozoic. Pha. Had. An approximate timescale of key Neoproterozoic events. Axis scale: millions of years ago. The Neoproterozoic Era is the last of the three geologic eras of the Proterozoic eon, spanning from 1 billion to 538.8 …
Proterozoic - Simple English Wikipedia, the free encyclopedia
The Proterozoic Eon extended from 2500 million years ago (mya) to 541 mya. It is the most recent part of the former Precambrian. The Proterozoic consists of 3 geologic eras, from oldest to …
Proterozoic Eon | Oxygen Crisis, Animals, & Facts | Britannica
- Proterozoic Eon, the younger of the two divisions of Precambrian time, the older being the Archean Eon. The Proterozoic Eon extended from 2.5 billion to 541 million years ago and is often divided into the Paleoproterozoic (2.5 billion to 1.6 billion years ago), the Mesoproterozoic (1.6 billion to 1 billion years ago), and the Neoproterozoic (1 bill...
Proterozoic - Wikiwand articles
The first began shortly after the beginning of the Proterozoic Eon, and evidence of at least four during the Neoproterozoic Era at the end of the Proterozoic Eon, possibly climaxing with the …
Proterozoic - New World Encyclopedia
The Proterozoic eon is an interval of geologic time of nearly 2 billion years extending from about 2500 million years ago (mya) to about 542 mya.
Proterozoic - Encyclopedia.com
May 17, 2018 · Proterozoic The eon of geological time extending from the end of the Archaean, about 2600 million years ago, to the start of the present eon (see Phanerozoic), about 570 …
The Proterozoic Eon - The Sights and Sites of America
The Proterozoic Eon spanned the years between the end of the Archean Eon (2.5 billion years ago) and the beginning of the Phanerozoic Eon with the Cambrian explosion of life (about 541 million years ago). The Proterozoic has been …
Proterozoic Eon - Geology Page
Oct 28, 2013 · The Proterozoic Eon extended from 2,500 Ma to 542.0±1.0 Ma (million years ago), and is the most recent part of the informally named “Precambrian” time. It is subdivided into three geologic eras (from oldest to …
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