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    Ediacaran - Wikipedia

    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 Proterozoic Eon as well as the last of the so-called "Precambrian supereon", before the beginning … 展开

    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

    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 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

    概览 图像

    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 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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  2. 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 to …

  3. Ediacaran biota - Wikipedia

  4. The tempo of Ediacaran evolution | Science Advances

    2021年11月3日 · We review, reconsider stratigraphic contexts of the Ediacaran fossil record, uncertainties arising from stratigraphy and geochronology, and reassess the pattern and dynamics of Ediacaran CIEs to address the regional …

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

  6. Chronology of Ediacaran sedimentary and biogeochemical shifts …

  7. Ediacaran life on land | Nature

    2012年12月12日 · A new interpretation of fossilized soils (palaeosols) suggests that at least some Ediacaran (625–542 million years ago) organisms lived on land; thus these Ediacaran fossils were not animals ...

  8. A late Ediacaran ice age: The key node in the Earth system evolution

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

  10. Ediacaran - an overview | ScienceDirect Topics