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  1. 94 million years

    The Ediacaran Period spans 94 million years from the end of the Cryogenian Period 635 million years ago (Mya), to the beginning of the Cambrian Period 541 Mya.
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    Ediacaran - Wikipedia

    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 Period does contain soft-bodied fossils, it is unusual in comparison to later periods … 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

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    The dating of the rock type section of the Ediacaran Period in South Australia has proven uncertain due to lack of overlying igneous material. … 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

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

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

    2016年11月8日 · Ediacaran Period, the uppermost division of the Proterozoic Eon of Precambrian time, extending from approximately 635 million years ago …

  5. The tempo of Ediacaran evolution | Science Advances

    2021年11月3日 · The rise of complex macroscopic life occurred during the Ediacaran Period, an interval that witnessed large-scale disturbances to biogeochemical systems. The current Ediacaran chronostratigraphic …

  6. Chronology of Ediacaran sedimentary and biogeochemical shifts …

  7. Ediacaran biota - Wikipedia

    The Ediacaran (/ ˌ iː d i ˈ æ k ər ə n /; formerly Vendian) biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period (c. 635538.8 Mya). These were enigmatic …

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

  9. The advent of animals: The view from the Ediacaran | PNAS

  10. Ediacaran life on land | Nature

    2012年12月12日 · Ediacaran (635–542 million years ago) fossils have been regarded as early animal ancestors of the Cambrian evolutionary explosion of marine invertebrate phyla1, as giant marine protists2 and as...

  11. Ediacaran Extinction and Cambrian Explosion - Cell Press

    2018年7月15日 · Here, we describe competing models for late Ediacaran extinction, summarize evidence for these models, and outline key questions which will drive research on this interval. We argue that the paleontological …

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