ArticleProceedings of the National Academy of Sciences of the United States of America2018
1.1-billion-year-old porphyrins establish a marine ecosystem dominated by bacterial primary producers.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.
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30 citing papers in PubMed, 99 citations in OpenAlex.
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- Biosignature stability in space enables their use for life detection on Mars.Science advances · 2022Article
- Chemical, Thermal, and Radiation Resistance of an Iron Porphyrin: A Model Study of Biosignature Stability.Astrobiology · 2022Article
- Review
- Intracellular bound chlorophyll residues identify 1 Gyr-old fossils as eukaryotic algae.Nature communications · 2022Article
- Vertical structure of the bacterial diversity in meromictic Fayetteville Green Lake.MicrobiologyOpen · 2021Article
- Chemistry of porphyrins in fossil plants and animals.RSC advances · 2021Review
- Carbon isotope evidence for the global physiology of Proterozoic cyanobacteria.Science advances · 2021Article
- Postdiagenetic Bacterial Transformation of Nickel and Vanadyl Sedimentary Porphyrins of Organic-Rich Shale Rock (Fore-Sudetic Monocline, Poland).Frontiers in microbiology · 2021Article
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Authors and funding
7 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The average cell size of marine phytoplankton is critical for the flow of energy and nutrients from the base of the food web to higher trophic levels. Thus, the evolutionary succession of primary producers through Earth's history is important for our understanding of the radiation of modern protists ∼800 million years ago and the emergence of eumetazoan animals ∼200 million years later. Currently, it is difficult to establish connections between primary production and the proliferation of large and complex organisms because the mid-Proterozoic (∼1,800-800 million years ago) rock record is nearly devoid of recognizable phytoplankton fossils. We report the discovery of intact porphyrins, the molecular fossils of chlorophylls, from 1,100-million-year-old marine black shales of the Taoudeni Basin (Mauritania), 600 million years older than previous findings. The porphyrin nitrogen isotopes (δ
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