Biogeosciences
Biogeosciences
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Articles | Volume 21, issue 18
Articles | Volume 21, issue 18
https://doi.org/10.5194/bg-21-4119-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-4119-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 18
Peer-reviewed comment
 | 
20 Sep 2024
Peer-reviewed comment |  | 20 Sep 2024

Reply to Head's comment on “The Volyn biota (Ukraine) – indications of 1.5 Gyr old eukaryotes in 3D preservation, a spotlight on the `boring billion' ” by Franz et al. (2023)

Gerhard Franz, Vladimir Khomenko, Peter Lyckberg, Vsevolod Chournousenko, and Ulrich Struck

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Short summary
The Volyn biota (Ukraine), previously assumed to be an extreme case of natural abiotic synthesis of organic matter, is more likely a diverse assemblage of fossils from the deep biosphere. Although contamination by modern organisms cannot completely be ruled out, it is unlikely, considering all aspects, i.e., their mode of occurrence in the deep biosphere, their fossilization and mature state of organic matter, their isotope signature, and their large morphological diversity.
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