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  1. 96 million years

    The Ediacaran (/ ˌiːdiˈækərən, ˌɛdi -/ EE-dee-AK-ər-ən, ED-ee-) is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya.
    en.wikipedia.org/wiki/Ediacaran
    en.wikipedia.org/wiki/Ediacaran
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    Ediacaran - Wikipedia

    The dating of the rock type section of the Ediacaran Period in South Australia has proven uncertain due to lack of overlying igneous material. Therefore, the age range of 635 to 538.8 million years is based on correlations to other countries where dating has been possible. The base age of approximately 635 million … 展开

    The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last period of the 展开

    Upper and lower boundaries 图像
    Subdivisions 图像
    Biota 图像

    The Ediacaran Period is not yet formally subdivided, but a proposed scheme recognises an Upper Ediacaran whose base corresponds with the 展开

    The relative proximity of the Moon at this time meant that tides were stronger and more rapid than they are now. The day was 21.9 ± 0.4 hours, and there were 13.1 ± 0.1 synodic months/year and 400 ± 7 solar days/year. 展开

    概览 图像

    The Ediacaran Period overlaps but is shorter than the Vendian Period (650 to 543 million years ago), a name that was earlier, in 1952, proposed … 展开

    The Ediacaran Period (c. 635–538.8 Mya) represents the time from the end of global Marinoan glaciation to the first appearance worldwide of somewhat complicated trace fossils (Treptichnus pedum (Seilacher, 1955)).
    Although the Ediacaran … 展开

    The fossil record from the Ediacaran Period is sparse, as more easily fossilized hard-shelled animals had yet to evolve. The Ediacaran biota include the oldest definite multicellular organisms (with specialized tissues), the most common types of which resemble … 展开

    A few English language documentaries have featured the Ediacaran Period and biota:
    • The Time Traveller's Guide To Australia (2012, ABC … 展开

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  4. Chronology of Ediacaran sedimentary and biogeochemical shifts …

  5. Ediacaran Period | Definition, Biota, and Facts | Britannica

    2016年11月8日 · Ediacaran Period, uppermost division of the Proterozoic Eon of Precambrian time and latest of the three periods of the Neoproterozoic Era, extending from approximately 635 million to 541 million years ago. The …

  6. The tempo of Ediacaran evolution - Science | AAAS

    2021年11月3日 · The Ediacaran Period [635 to 539 million years (Ma) ago] is a pivotal period in Earth history, archiving the rise of complex macroscopic life (1). This evolutionary milestone occurred in the aftermath of extreme climate …

  7. A late Ediacaran ice age: The key node in the Earth ... - ScienceDirect

  8. The Ediacaran Period - University of California Museum of …

  9. A diverse Ediacara assemblage survived under low-oxygen …

  10. The Rise and Fall of the Ediacaran Biota - GeoScienceWorld

  11. The Ediacaran Rock Units - Springer

  12. Ediacaran biozones identified with network analysis …

    2019年2月22日 · Rocks of Ediacaran age (~635–541 Ma) contain the oldest fossils of large, complex organisms and their behaviors.

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