ArticleInterface focus2020
Aluminosilicate haloes preserve complex life approximately 800 million years ago.
Article in Interface focus, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 35 citations in OpenAlex.
- Re-evaluating molecular clock maximum age calibrations revives pre-Ediacaran divergence estimates for animals.Science advances · 2026Article
- Experimental taphonomy of marine algae and cyanobacteria reveals the decoupling of morphological and chemical decay patterns.iScience · 2025Article
- Proterozoic microfossils continue to provide new insights into the rise of complex eukaryotic life.Royal Society open science · 2024Review
- A review of microbial-environmental interactions recorded in Proterozoic carbonate-hosted chert.Geobiology · 2023Review
- Preservation of early Tonian macroalgal fossils from the Dolores Creek Formation, Yukon.Scientific reports · 2022Article
- Detection of porphyrins in vertebrate fossils from the Messel and implications for organic preservation in the fossil record.PloS one · 2022Article
- Late Ediacaran life on land: desiccated microbial mats and large biofilm streamers.Proceedings. Biological sciences · 2021Article
Corrections and comments
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Authors and funding
10 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Mudstone-hosted microfossils are a major component of the Proterozoic fossil record, particularly dominating the record of early eukaryotic life. Early organisms possessed no biomineralized parts to resist decay and controls on their fossilization in mudstones are poorly understood. Consequently, the Proterozoic fossil record is compromised-we do not know whether changing temporal/spatial patterns of microfossil occurrences reflect evolution or the distribution of favourable fossilization conditions. We investigated fossilization within the approximately 1000 Ma Lakhanda Group (Russia) and the approximately 800 Ma Svanbergfjellet and Wynniatt formations (Svalbard and Arctic Canada). Vertical sections of microfossils and surrounding matrices were extracted from thin sections by focused ion beam milling. Elemental mapping and synchrotron-based infrared microspectroscopy revealed that microfossils are surrounded by haloes rich in aluminium, probably hosted in kaolinite. Kaolinite has been implicated in Cambrian Burgess Shale-type (BST) fossilization and is known to slow the growth of degraders. The Neoproterozoic mudstone microfossil record may be biased to tropical settings conducive to kaolinite formation. These deposits lack metazoan fossils even though they share fossilization conditions with younger BST deposits that are capable of preserving non-mineralizing metazoans. Thus metazoans, at least those typically preserved in BST deposits, were probably absent from sedimentary environments before approximately 800 Ma.
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