The DOI matches its Crossref record; 101 of the 102 references it cites were found in a registry or an index.
Late Archean molecular fossils from the Transvaal Supergroup record the antiquity of microbial diversity and aerobiosis
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In the citing paper
“Moreover, extractable acyclic isoprenoids and a homologous series of extractable n-alkanes (C 10-23+ ), both of which were prominent in previous Archean biomarker studies (1-3, 5, 7, 22, 23), were also below detection limits or cumulative laboratory blank concentrations in the AIDP samples.”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [7]
In the citing paper
“Furthermore, the hopane and sterane concentrations measured in our analysis of the RHDH2A sample are more compatible with the concentrations reported in earlier Archean biomarker studies of the Mount Bruce and Transvaal supergroups (7,21)”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [7]
In the citing paper
“For comparison, the hopane and sterane concentrations that were detectable and measured in the AIDP samples are approximately one to three orders of magnitude less than the hopane and sterane concentrations reported in earlier Archean biomarker studies (7,21).”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [7]
In the citing paper
“the analyses of the saw blade (before it was heat treated) and the sawed surfaces of the RHDH2A quarter-core highlight that sawing can contribute significant but variable hydrocarbon contaminants to the substrate, yet the cumulative blanks reported in previous studies did not record the hydrocarbon contribution from sawing (1,4,6,7).”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [7]
In the citing paper
“According to currently available H/C ratios and other indicators of thermal history, the metamorphic grades of AIDP-2 and AIDP-3 are similar to (1-4, 6, 7, 15, 21, 26) or lower than (5,22,23) the metamorphic grades of the rocks from which biomarkers have been previously reported.”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [7]
In the citing paper
“Instead, contamination is the only explanation for the reproducibility of the detectable surficial hopanes and steranes in conventionally drilled and curated Archean samples (3,6,7,11) and the undetectable or blank level-equivalent hopane and sterane concentrations in samples from the ultraclean AIDP drill cores.”
From Reappraisal of hydrocarbon biomarkers in Archean rocks (2015) · cites this paper as [7]
Citations
Cites
(2024) · Elsevier eBooks · doi:10.1016/c2020-1-04096-5 · Cited by 2,772
Peters, K. E., Walters, C. C., & Moldowan, J. M. (2004) · Cambridge University Press eBooks · doi:10.1017/cbo9780511524868 · Cited by 2,400
The oxygenation of the atmosphere and oceans
Holland, H. D. (2006) · Philosophical Transactions of the Royal Society B: Biological Sciences · doi:10.1098/rstb.2006.1838 · Cited by 1,535
Earth's earliest biosphere : its origin and evolution
Schopf, J. W. (1983) · Cited by 1,287
Archean Molecular Fossils and the Early Rise of Eukaryotes
Brocks, J. J., Logan, G. A., Buick, R., & Summons, R. E. (1999) · Science · doi:10.1126/science.285.5430.1033 · Cited by 1,275
Self-citationEvidence for gammacerane as an indicator of water column stratification
Damsté, J. S. S., Kenig, F., Koopmans, M. P., Köster, J., Stefan Schouten, A., Hayes, J. M., & de Leeuw, J. W. (1995) · Geochimica et Cosmochimica Acta · doi:10.1016/0016-7037(95)00073-9 · Cited by 1,100
2-Methylhopanoids as biomarkers for cyanobacterial oxygenic photosynthesis
Summons, R. E., Jahnke, L. L., Hope, J. M., & Logan, G. A. (1999) · Nature · doi:10.1038/23005 · Cited by 975
Self-citationStromatolite reef from the Early Archaean era of Australia
Allwood, A. C., Walter, M. R., Kamber, B. S., Marshall, C. P., & Burch, I. W. (2006) · Nature · doi:10.1038/nature04764 · Cited by 905
Advances in organic geochemistry 1979
HODGSON, G. W. (1983) · Chemical Geology · doi:10.1016/0009-2541(83)90082-7 · Cited by 820
Mineral deposits of Southern Africa
ANHAEUSSER, C. R., & Maske, S. (1986) · Medical Entomology and Zoology · Cited by 757
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Raiswell, R., & Canfield, D. E. (2012) · Geochemical Perspectives · doi:10.7185/geochempersp.1.1 · Cited by 756
Evolution of Oxygenic Photosynthesis
Fischer, W. W., Hemp, J., & Johnson, J. E. (2016) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev-earth-060313-054810 · Cited by 438
Rapid evolutionary innovation during an Archaean genetic expansion
David, L. A., & Alm, E. J. (2010) · Nature · doi:10.1038/nature09649 · Cited by 420
Paleobiological Perspectives on Early Eukaryotic Evolution
Knoll, A. H. (2014) · Cold Spring Harbor Perspectives in Biology · doi:10.1101/cshperspect.a016121 · Cited by 394
Schirrmeister, B. E., de Vos, J. M., Antonelli, A., & Bagheri, H. C. (2013) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1209927110 · Cited by 372
Metadata
- Authors
- Waldbauer, J. R., Sherman, L. S., Sumner, D. Y., & Summons, R. E.
- Affiliations
- Massachusetts Institute of Technology (US)
- University of California, Davis (US)
- Corresponding author
- Summons, Roger E.
- Venue
- Precambrian Research
- Publisher
- Elsevier BV
- Published
- 2009-03
- Volume
- 169
- Issue
- 1-4
- Pages
- 28-47
- ISSN
- 0301-9268 (ISSN-L)
- OpenAlex
- W1967509775
- Cited by
- 167
- References
- 102
- Citations by year
- 2025: 3 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 7 · 2020: 5 · 2019: 7 · 2018: 7 · 2017: 9 · 2016: 11 · 2015: 12 · 2014: 12 · 2013: 18 · 2012: 21
- FWCI
- 11.92
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Precambrian Research (publishedVersion)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
- Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geological and Geochemical Analysis
- Keywords
- Late Archean, molecular fossils, Transvaal Supergroup, microbial diversity, hopanes, steranes, cyanobacteria, methanotrophic bacteria, oxygenic photosynthesis, eukaryotic origin, origin of cellular life, unconformity
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