Microfossils of sulphur-metabolizing cells in 3.4-billion-year-old rocks of Western Australia
作者： David Wacey , Matt R. Kilburn , Martin Saunders , John Cliff , Martin D. Brasier
DOI: 10.1038/NGEO1238
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摘要: Sulphur isotope data from early Archaean rocks suggest that microbes with metabolisms based on sulphur existed almost 3.5 billion years ago, leading to suggestions the earliest microbial ecosystems were sulphur-based 1‐5 . However, morphological evidence for these sulphur-metabolizing bacteria has been elusive. Here we report presence of microstructures 3.4-billion-year-old Strelley Pool Formation in Western Australia are associated micrometre-sized pyrite crystals. The identify exhibit indicators biological affinity, including hollow cell lumens, carbonaceous walls enriched nitrogen, taphonomic degradation, organization into chains and clusters, 13 C values 33
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