Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis

J. William Schopf; Anatoliy B. Kudryavtsev; Malcolm R. Walter; Martin J. Van Kranendonk; Kenneth H. Williford; Reinhard Kozdon; John W. Valley; Victor A. Gallardo; Carola Espinoza; David T. Flannery

doi:10.1073/pnas.1419241112

Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis

J. William Schopf, Anatoliy B. Kudryavtsev, Malcolm R. Walter, Martin J. Van Kranendonk, Kenneth H. Williford, Reinhard Kozdon, John W. Valley, Victor A. Gallardo, Carola Espinoza, David T. Flannery

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

The recent discovery of a deep-water sulfur-cycling microbial biota in the ~2.3-Ga Western Australian Turee Creek Group opened a new window to life's early history. We now report a second such subseafloor-inhabiting community from the Western Australian ~1.8-Ga Duck Creek Formation. Permineralized in cherts formed during and soon after the 2.4-to 2.2-Ga "Great Oxidation Event," these two biotas may evidence an opportunistic response to the mid-Precambrian increase of environmental oxygen that resulted in increased production of metabolically useable sulfate and nitrate. The marked similarity of microbial morphology, habitat, and organization of these fossil communities to their modern counterparts documents exceptionally slow (hypobradytelic) change that, if paralleled by their molecular biology, would evidence extreme evolutionary stasis.

Original language	English
Pages (from-to)	2087-2092
Number of pages	6
Journal	Proceedings of the National Academy of Sciences of the United States of America
Volume	112
Issue number	7
DOIs	https://doi.org/10.1073/pnas.1419241112
Publication status	Published - Feb 17 2015
Externally published	Yes

Keywords

Great Oxidation Event
Microbial evolution
Null hypothesis
Precambrian microorganisms
Sulfur bacteria

ASJC Scopus subject areas

General

Access to Document

10.1073/pnas.1419241112

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Schopf, J. W., Kudryavtsev, A. B., Walter, M. R., Van Kranendonk, M. J., Williford, K. H., Kozdon, R., Valley, J. W., Gallardo, V. A., Espinoza, C., & Flannery, D. T. (2015). Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis. Proceedings of the National Academy of Sciences of the United States of America, 112(7), 2087-2092. https://doi.org/10.1073/pnas.1419241112

Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis. / Schopf, J. William; Kudryavtsev, Anatoliy B.; Walter, Malcolm R.; Van Kranendonk, Martin J.; Williford, Kenneth H.; Kozdon, Reinhard; Valley, John W.; Gallardo, Victor A.; Espinoza, Carola; Flannery, David T.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 112, No. 7, 17.02.2015, p. 2087-2092.

Research output: Contribution to journal › Article › peer-review

Schopf, JW, Kudryavtsev, AB, Walter, MR, Van Kranendonk, MJ, Williford, KH, Kozdon, R, Valley, JW, Gallardo, VA, Espinoza, C & Flannery, DT 2015, 'Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis', Proceedings of the National Academy of Sciences of the United States of America, vol. 112, no. 7, pp. 2087-2092. https://doi.org/10.1073/pnas.1419241112

Schopf, J. William ; Kudryavtsev, Anatoliy B. ; Walter, Malcolm R. ; Van Kranendonk, Martin J. ; Williford, Kenneth H. ; Kozdon, Reinhard ; Valley, John W. ; Gallardo, Victor A. ; Espinoza, Carola ; Flannery, David T. / Sulfur-cycling fossil bacteria from the 1.8-Ga Duck Creek Formation provide promising evidence of evolution's null hypothesis. In: Proceedings of the National Academy of Sciences of the United States of America. 2015 ; Vol. 112, No. 7. pp. 2087-2092.

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