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The Proterozoic Era was definitely from 2.5 billion years ago to 600 mya. There was an oxygen build-up on Earth and there were the first multi-cellular life forms on our planet. 4.248.84.96 ( talk) 17:40, 18 October 2005
I made some changes in keeping with accepted stratigraphic nomenclature. I also reworded the third paragraph (for the better, I hope), added a blurb on the Cyrogenian and Ediacaran Periods and added some links. I am teaching a course in Historical Geology this semester (first time in 15 years) and am finding Wikipedia very useful in filling in all of the picky little facts that I need for my lectures but have long since forgotten! Jay Gregg ( talk | contribs) 19:44, 19 February 2006
From the article: "The transition to an oxygenated atmosphere during the Mesoproterozoic."
However, the Mesoproterozoic doesn't mention this, the Paleoproterozoic era article dates the Oxygen Catastrophe in the Siderian period. So which is it? Jeff schiller 17:31, 27 July 2006 (UTC)
"most accumulation ceased after 1.9 billion years ago, either due to an increase in oxygen or a more thorough mixing of the oceanic water column.(Stanley 324)" right, accumulation stoped at 1.9 Gyr and the second part of the sentence is fine but how an increase in Oxygen can stop accumulation ? - phe 10:09, 14 January 2008 (UTC)
In the references, #7 is an LPSC abstract about the Tharsis rise on Mars. I assume there is a typo in the link. Can someone please fix the reference? Proterovenus ( talk) 20:24, 18 April 2010 (UTC)proterovenus
What is the defining event for the ending of the Archaean and the beginning of the Proterozoic? -- 77.189.29.100 ( talk) 14:43, 23 October 2011 (UTC)
I realize your question is kind of old and the article is over 30 years old, but maybe a starting point. http://www.sciencedirect.com/science/article/pii/0040195184901938 Geodude86 ( talk) 01:51, 6 July 2017 (UTC)
This picture should be replaced. The Bolivian stromatolithes were falsely dated as Proterozoic. They are actually Cretaceous! This is also mentioned in the picture infos. 2A02:1206:45A9:3E80:4C2:1203:E312:E8E6 ( talk) 23:53, 5 February 2016 (UTC)
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The statement at the end of the intro about edicarian fossils being the "first obvious fossil evidence of life on earth" seems incorrect considering stromatolites dated to a few billion years old at least. Geodude86 ( talk) 01:41, 6 July 2017 (UTC)
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The Proterozoic Era was definitely from 2.5 billion years ago to 600 mya. There was an oxygen build-up on Earth and there were the first multi-cellular life forms on our planet. 4.248.84.96 ( talk) 17:40, 18 October 2005
I made some changes in keeping with accepted stratigraphic nomenclature. I also reworded the third paragraph (for the better, I hope), added a blurb on the Cyrogenian and Ediacaran Periods and added some links. I am teaching a course in Historical Geology this semester (first time in 15 years) and am finding Wikipedia very useful in filling in all of the picky little facts that I need for my lectures but have long since forgotten! Jay Gregg ( talk | contribs) 19:44, 19 February 2006
From the article: "The transition to an oxygenated atmosphere during the Mesoproterozoic."
However, the Mesoproterozoic doesn't mention this, the Paleoproterozoic era article dates the Oxygen Catastrophe in the Siderian period. So which is it? Jeff schiller 17:31, 27 July 2006 (UTC)
"most accumulation ceased after 1.9 billion years ago, either due to an increase in oxygen or a more thorough mixing of the oceanic water column.(Stanley 324)" right, accumulation stoped at 1.9 Gyr and the second part of the sentence is fine but how an increase in Oxygen can stop accumulation ? - phe 10:09, 14 January 2008 (UTC)
In the references, #7 is an LPSC abstract about the Tharsis rise on Mars. I assume there is a typo in the link. Can someone please fix the reference? Proterovenus ( talk) 20:24, 18 April 2010 (UTC)proterovenus
What is the defining event for the ending of the Archaean and the beginning of the Proterozoic? -- 77.189.29.100 ( talk) 14:43, 23 October 2011 (UTC)
I realize your question is kind of old and the article is over 30 years old, but maybe a starting point. http://www.sciencedirect.com/science/article/pii/0040195184901938 Geodude86 ( talk) 01:51, 6 July 2017 (UTC)
This picture should be replaced. The Bolivian stromatolithes were falsely dated as Proterozoic. They are actually Cretaceous! This is also mentioned in the picture infos. 2A02:1206:45A9:3E80:4C2:1203:E312:E8E6 ( talk) 23:53, 5 February 2016 (UTC)
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Cheers.— InternetArchiveBot ( Report bug) 17:22, 4 June 2017 (UTC)
The statement at the end of the intro about edicarian fossils being the "first obvious fossil evidence of life on earth" seems incorrect considering stromatolites dated to a few billion years old at least. Geodude86 ( talk) 01:41, 6 July 2017 (UTC)