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Ediacaran matground ecology persisted into the earliest Cambrian.
Nat Commun. 2014 Mar 28; 5:3544.NC

Abstract

The beginning of the Cambrian was a time of marked biological and sedimentary changes, including the replacement of Proterozoic-style microbial matgrounds by Phanerozoic-style bioturbated mixgrounds. Here we show that Ediacaran-style matground-based ecology persisted into the earliest Cambrian. Our study in the type section of the basal Cambrian in Fortune Head, Newfoundland, Canada reveals widespread microbially induced sedimentary structures and typical Ediacaran-type matground ichnofossils. Ediacara-type body fossils are present immediately below the top of the Ediacaran but are strikingly absent from the overlying Cambrian succession, despite optimal conditions for their preservation, and instead the microbial surfaces are marked by the appearance of the first abundant arthropod scratch marks in Earth evolution. These features imply that the disappearance of the Ediacara biota represents an abrupt evolutionary event that corresponded with the appearance of novel bilaterian clades, rather than a fading away owing to the gradual elimination of conditions appropriate for Ediacaran preservation.

Authors+Show Affiliations

Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada SK S7N 5E2.Department of Geological Sciences and Geological Engineering, Queen's University, Kingston, Ontario, Canada K7L 3N6.Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada SK S7N 5E2.1] Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada SK S7N 5E2 [2].Department of Geology, Colorado College, Colorado Springs, Colorado 80903, USA.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24675373

Citation

Buatois, Luis A., et al. "Ediacaran Matground Ecology Persisted Into the Earliest Cambrian." Nature Communications, vol. 5, 2014, p. 3544.
Buatois LA, Narbonne GM, Mángano MG, et al. Ediacaran matground ecology persisted into the earliest Cambrian. Nat Commun. 2014;5:3544.
Buatois, L. A., Narbonne, G. M., Mángano, M. G., Carmona, N. B., & Myrow, P. (2014). Ediacaran matground ecology persisted into the earliest Cambrian. Nature Communications, 5, 3544. https://doi.org/10.1038/ncomms4544
Buatois LA, et al. Ediacaran Matground Ecology Persisted Into the Earliest Cambrian. Nat Commun. 2014 Mar 28;5:3544. PubMed PMID: 24675373.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ediacaran matground ecology persisted into the earliest Cambrian. AU - Buatois,Luis A, AU - Narbonne,Guy M, AU - Mángano,M Gabriela, AU - Carmona,Noelia B, AU - Myrow,Paul, Y1 - 2014/03/28/ PY - 2013/12/12/received PY - 2014/03/03/accepted PY - 2014/3/29/entrez PY - 2014/3/29/pubmed PY - 2014/9/23/medline SP - 3544 EP - 3544 JF - Nature communications JO - Nat Commun VL - 5 N2 - The beginning of the Cambrian was a time of marked biological and sedimentary changes, including the replacement of Proterozoic-style microbial matgrounds by Phanerozoic-style bioturbated mixgrounds. Here we show that Ediacaran-style matground-based ecology persisted into the earliest Cambrian. Our study in the type section of the basal Cambrian in Fortune Head, Newfoundland, Canada reveals widespread microbially induced sedimentary structures and typical Ediacaran-type matground ichnofossils. Ediacara-type body fossils are present immediately below the top of the Ediacaran but are strikingly absent from the overlying Cambrian succession, despite optimal conditions for their preservation, and instead the microbial surfaces are marked by the appearance of the first abundant arthropod scratch marks in Earth evolution. These features imply that the disappearance of the Ediacara biota represents an abrupt evolutionary event that corresponded with the appearance of novel bilaterian clades, rather than a fading away owing to the gradual elimination of conditions appropriate for Ediacaran preservation. SN - 2041-1723 UR - https://www.unboundmedicine.com/medline/citation/24675373/Ediacaran_matground_ecology_persisted_into_the_earliest_Cambrian_ L2 - https://doi.org/10.1038/ncomms4544 DB - PRIME DP - Unbound Medicine ER -