在新选项卡中打开链接
  1. Overview

    The Ediacaran biota is a taxonomic period classification that consists of all life forms that were present on … 展开

    Ediacaran biota - Wikipedia

    • A diverse Ediacaran community was discovered in 1995 in Sonora, Mexico, and is approximately 555 million years in age, roughly coeval with Ediacaran fossils of the Ediacara Hills in South Australia and the White Sea on the coast of Russia. 展开

    History

    The first Ediacaran fossils discovered were the disc-shaped Aspidella terranovica in 1868. Their discoverer, Scottish geologist Alexander Murray, found them useful aids for correlating the age of rocks around Newfoundland. … 展开

    Preservation

    Microbial mats are areas of sediment stabilised by the presence of colonies of microbes that secrete sticky fluids or otherwise bind the sediment particles. They appear to migrate upwards when covered by a thin layer o… 展开

    Morphology

    The Ediacaran biota exhibited a vast range of morphological characteristics. Size ranged from millimetres to metres; complexity from "blob-like" to intricate; rigidity from sturdy and resistant to jelly-soft. Almost all forms of … 展开

    Classification and interpretation

    Classification of the Ediacarans is difficult, and hence a variety of theories exist as to their placement on the tree of life.
    Martin Glaessner proposed in The Dawn of Animal Life (1984) that the Ediacaran biota were recognizable … 展开

    Origin

    It took almost 4 billion years from the formation of the Earth for Ediacaran fossils to first appear, 655 million years ago. While putative fossils are reported from 3,460 million years ago, the first uncontroversial evidence for life i… 展开

    Assemblages

    Late Ediacaran macrofossils are recognized globally in at least 52 formations and a variety of depositional conditions. Each formation is commonly grouped into three main types, known as assemblages and … 展开

     
  1. Ediacaran - Wikipedia

  2. Ediacara fauna | Definition, Biota, and Facts | Britannica

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

  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. Ancient steroids establish the Ediacaran fossil - Science …

    2018年9月21日 · Undisputed Ediacaran animals trace and body fossils are small (< 5mm diameter) and vermiform with chitin or calcite skeletons, and have been characterized as Ediacaran Wormworld (8).

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

    Ediacaran Period, the uppermost division of the Proterozoic Eon of Precambrian time, extending from approximately 635 million years ago to 541 million years ago. The Ediacaran Period produced some of the earliest known evidence of …

  8. Biofilms as agents of Ediacara-style fossilization

  9. Ediacaran life on land | Nature

    2012年12月12日 · Ediacaran fossils —542 to 635 million years old — occur worldwide in a variety of sedimentary deposits, generally interpreted as shallow to deep marine origin.