Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian
Abstract The mass extinction characterizing the Permian/Triassic boundary (PTB; ~ 252 Ma) corresponds to a major faunal shift between the Palaeozoic and the Modern evolutionary fauna. The temporal, spatial, environmental, and ecological dynamics of the associated biotic recovery remain highly debate...
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doaj-d2f8fa065c0d4ed6a16ba1fcf961ec012021-10-10T11:29:48ZengNature Publishing GroupScientific Reports2045-23222021-10-0111111210.1038/s41598-021-99056-8Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early SpathianChristopher P. A. Smith0Thomas Laville1Emmanuel Fara2Gilles Escarguel3Nicolas Olivier4Emmanuelle Vennin5Nicolas Goudemand6Kevin G. BylundJames F. JenksDaniel A. Stephen7Michael Hautmann8Sylvain Charbonnier9L. J. Krumenacker10Arnaud Brayard11Biogéosciences UMR 6282 CNRS, Université Bourgogne Franche-ComtéMuséum National d’Histoire Naturelle, CR2P, UMR 7207, CNRS, Sorbonne UniversitéBiogéosciences UMR 6282 CNRS, Université Bourgogne Franche-ComtéLEHNA UMR 5023, CNRS, ENTPE, Univ Lyon, Université Claude Bernard Lyon 1LMV, Université Clermont Auvergne, CNRS, IRDBiogéosciences UMR 6282 CNRS, Université Bourgogne Franche-ComtéIGFL UMR 5242, CNRS, ENS de Lyon, Université Claude Bernard Lyon 1Department of Earth Science, Utah Valley UniversityPaläontologisches Institut und Museum, Universität ZürichMuséum National d’Histoire Naturelle, CR2P, UMR 7207, CNRS, Sorbonne UniversitéDepartment of Geosciences, Idaho State UniversityBiogéosciences UMR 6282 CNRS, Université Bourgogne Franche-ComtéAbstract The mass extinction characterizing the Permian/Triassic boundary (PTB; ~ 252 Ma) corresponds to a major faunal shift between the Palaeozoic and the Modern evolutionary fauna. The temporal, spatial, environmental, and ecological dynamics of the associated biotic recovery remain highly debated, partly due to the scarce, or poorly-known, Early Triassic fossil record. Recently, an exceptionally complex ecosystem dated from immediately after the Smithian/Spathian boundary (~ 3 myr after the PTB) was reported: the Paris Biota (Idaho, USA). However, the spatiotemporal representativeness of this unique assemblage remained questionable as it was hitherto only reported from a single site. Here we describe three new exceptionally diverse assemblages of the same age as the Paris Biota, and a fourth younger one. They are located in Idaho and Nevada, and are taxonomic subsets of the Paris Biota. We show that the latter covered a region-wide area and persisted at least partially throughout the Spathian. The presence of a well-established marine fauna such as the Paris Biota, as soon as the early Spathian, indicates that the post-PTB biotic recovery and the installation of complex ecosystems probably took place earlier than often assumed, at least at a regional scale.https://doi.org/10.1038/s41598-021-99056-8 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Christopher P. A. Smith Thomas Laville Emmanuel Fara Gilles Escarguel Nicolas Olivier Emmanuelle Vennin Nicolas Goudemand Kevin G. Bylund James F. Jenks Daniel A. Stephen Michael Hautmann Sylvain Charbonnier L. J. Krumenacker Arnaud Brayard |
spellingShingle |
Christopher P. A. Smith Thomas Laville Emmanuel Fara Gilles Escarguel Nicolas Olivier Emmanuelle Vennin Nicolas Goudemand Kevin G. Bylund James F. Jenks Daniel A. Stephen Michael Hautmann Sylvain Charbonnier L. J. Krumenacker Arnaud Brayard Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian Scientific Reports |
author_facet |
Christopher P. A. Smith Thomas Laville Emmanuel Fara Gilles Escarguel Nicolas Olivier Emmanuelle Vennin Nicolas Goudemand Kevin G. Bylund James F. Jenks Daniel A. Stephen Michael Hautmann Sylvain Charbonnier L. J. Krumenacker Arnaud Brayard |
author_sort |
Christopher P. A. Smith |
title |
Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian |
title_short |
Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian |
title_full |
Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian |
title_fullStr |
Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian |
title_full_unstemmed |
Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian |
title_sort |
exceptional fossil assemblages confirm the existence of complex early triassic ecosystems during the early spathian |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-10-01 |
description |
Abstract The mass extinction characterizing the Permian/Triassic boundary (PTB; ~ 252 Ma) corresponds to a major faunal shift between the Palaeozoic and the Modern evolutionary fauna. The temporal, spatial, environmental, and ecological dynamics of the associated biotic recovery remain highly debated, partly due to the scarce, or poorly-known, Early Triassic fossil record. Recently, an exceptionally complex ecosystem dated from immediately after the Smithian/Spathian boundary (~ 3 myr after the PTB) was reported: the Paris Biota (Idaho, USA). However, the spatiotemporal representativeness of this unique assemblage remained questionable as it was hitherto only reported from a single site. Here we describe three new exceptionally diverse assemblages of the same age as the Paris Biota, and a fourth younger one. They are located in Idaho and Nevada, and are taxonomic subsets of the Paris Biota. We show that the latter covered a region-wide area and persisted at least partially throughout the Spathian. The presence of a well-established marine fauna such as the Paris Biota, as soon as the early Spathian, indicates that the post-PTB biotic recovery and the installation of complex ecosystems probably took place earlier than often assumed, at least at a regional scale. |
url |
https://doi.org/10.1038/s41598-021-99056-8 |
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