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    Wikipedia
    https://en.wikipedia.org/wiki/Archaea
    Archaea - Wikipedia
    简要情况
    域：古菌域 Archaea
    Discovery and classification

    For much of the 20th century, prokaryotes were regarded as a single group of organisms and classified based on their biochemistry, morphology and metabolism. Microbiologists tried to classify microorganisms … 展开

    Prokaryotic phyla

    The following phyla have been validly published according to the Bacteriological Code:
    • Halobacteriota
    • Methanobacteriota
    • Microcaldota… 展开

    Origin and evolution

    The age of the Earth is about 4.54 billion years. Scientific evidence suggests that life began on Earth at least 3.5 billion years ago. The earliest evidence for life on Earth is graphite found to be biogenic in 3.7-billion-year-old … 展开

    Morphology

    Individual archaea range from 0.1 micrometers (μm) to over 15 μm in diameter, and occur in various shapes, commonly as spheres, rods, spirals or plates. Other morphologies in the Thermoproteota include … 展开

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