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• n  from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
• s  formed in the later of two divisions of the Precambrian era
  proterozoic life forms

• Me and me merry proterozoic sphearomorphic acritarchs be takin' offense at ye scurvy dog's scurrilous slights o' the plankton'.

• Proterozoic
• Proterozoic eon
• Proterozoic aeon

News & Articles

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• October GSA Today: Earth upon Impact
  ( Geological Society of America ) In the October issue of GSA Today, Grant Young of the University of Western Ontario discusses the possible causes of the numerous glaciations that characterized the Neoproterozoic and concludes that a dramatic shift in Earth's climate may have occurred during the Ediacaran, in part due to a large marine impact. According to Young, this shift separates ...
  Oct. 2, 2013 - EurekAlert!