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  1. 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/Proterozoic
    It 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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  3. Mesoproterozoic - Wikipedia

  4. 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 …

  5. Proterozoic - Simple English Wikipedia, the free encyclopedia

  6. Proterozoic Eon | Oxygen Crisis, Animals, & Facts | Britannica

  7. Proterozoic - Wikiwand articles

  8. 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.

  9. Proterozoic - Encyclopedia.com

  10. 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 …

  11. 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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