Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment. Cavalazzi, B., Lemelle, L., Simionovici, A., Cady, S. L., Russell, M. J., Bailo, E., Canteri, R., Enrico, E., Manceau, A., Maris, A., Salomé, M., Thomassot, E., Bouden, N., Tucoulou, R., & Hofmann, A. Science Advances, 7(29):eabf3963, July, 2021. ![Cellular remains in a ~3.42-billion-year-old subseafloor hydrothermal environment [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Oldest microfossils with methane-based metabolism in a subsurface environment expand the frontiers of early Earth habitability. , Subsurface habitats on Earth host an extensive extant biosphere and likely provided one of Earth’s earliest microbial habitats. Although the site of life’s emergence continues to be debated, evidence of early life provides insights into its early evolution and metabolic affinity. Here, we present the discovery of exceptionally well-preserved, ~3.42-billion-year-old putative filamentous microfossils that inhabited a paleo-subseafloor hydrothermal vein system of the Barberton greenstone belt in South Africa. The filaments colonized the walls of conduits created by low-temperature hydrothermal fluid. Combined with their morphological and chemical characteristics as investigated over a range of scales, they can be considered the oldest methanogens and/or methanotrophs that thrived in an ultramafic volcanic substrate.
@article{cavalazzi_cellular_2021,
title = {Cellular remains in a {\textasciitilde}3.42-billion-year-old subseafloor hydrothermal environment},
volume = {7},
issn = {2375-2548},
url = {https://www.science.org/doi/10.1126/sciadv.abf3963},
doi = {10.1126/sciadv.abf3963},
abstract = {Oldest microfossils with methane-based metabolism in a subsurface environment expand the frontiers of early Earth habitability.
,
Subsurface habitats on Earth host an extensive extant biosphere and likely provided one of Earth’s earliest microbial habitats. Although the site of life’s emergence continues to be debated, evidence of early life provides insights into its early evolution and metabolic affinity. Here, we present the discovery of exceptionally well-preserved, {\textasciitilde}3.42-billion-year-old putative filamentous microfossils that inhabited a paleo-subseafloor hydrothermal vein system of the Barberton greenstone belt in South Africa. The filaments colonized the walls of conduits created by low-temperature hydrothermal fluid. Combined with their morphological and chemical characteristics as investigated over a range of scales, they can be considered the oldest methanogens and/or methanotrophs that thrived in an ultramafic volcanic substrate.},
language = {en},
number = {29},
urldate = {2023-02-24},
journal = {Science Advances},
author = {Cavalazzi, Barbara and Lemelle, Laurence and Simionovici, Alexandre and Cady, Sherry L. and Russell, Michael J. and Bailo, Elena and Canteri, Roberto and Enrico, Emanuele and Manceau, Alain and Maris, Assimo and Salomé, Murielle and Thomassot, Emilie and Bouden, Nordine and Tucoulou, Rémi and Hofmann, Axel},
month = jul,
year = {2021},
pages = {eabf3963},
}
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Although the site of life’s emergence continues to be debated, evidence of early life provides insights into its early evolution and metabolic affinity. Here, we present the discovery of exceptionally well-preserved, ~3.42-billion-year-old putative filamentous microfossils that inhabited a paleo-subseafloor hydrothermal vein system of the Barberton greenstone belt in South Africa. The filaments colonized the walls of conduits created by low-temperature hydrothermal fluid. 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