High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China
International audience After the end-Permian mass extinction (EPME), the marine environment was considered extremely toxic, which was mainly due to the anoxic and high-temperature conditions and ocean acidification; thus, the ecosystem contained few organisms. This paper describes a new ostracod fau...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Format: | Article in Journal/Newspaper |
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ftccsdartic:oai:HAL:hal-02613951v1 2023-05-15T17:52:00+02:00 High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China Wan, Junyu Yuan, Aihua Crasquin, S. Jiang, Haishui Yang, Hao Hu, Xia China University of Geosciences Wuham (CUG) Micropaléontologie Université Pierre et Marie Curie - Paris 6 (UPMC) Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2019 https://hal.archives-ouvertes.fr/hal-02613951 https://hal.archives-ouvertes.fr/hal-02613951/document https://hal.archives-ouvertes.fr/hal-02613951/file/Wan%20et%20al.2019%2004%2016%20SC.pdf https://doi.org/10.1016/j.palaeo.2019.109349 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2019.109349 hal-02613951 https://hal.archives-ouvertes.fr/hal-02613951 https://hal.archives-ouvertes.fr/hal-02613951/document https://hal.archives-ouvertes.fr/hal-02613951/file/Wan%20et%20al.2019%2004%2016%20SC.pdf doi:10.1016/j.palaeo.2019.109349 info:eu-repo/semantics/OpenAccess ISSN: 0031-0182 Palaeogeography, Palaeoclimatology, Palaeoecology https://hal.archives-ouvertes.fr/hal-02613951 Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2019, 535, pp.109349. ⟨10.1016/j.palaeo.2019.109349⟩ end-Permian mass extinction Ostracod evolution paleoecology paleoenvironment [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1016/j.palaeo.2019.109349 2021-10-31T00:29:04Z International audience After the end-Permian mass extinction (EPME), the marine environment was considered extremely toxic, which was mainly due to the anoxic and high-temperature conditions and ocean acidification; thus, the ecosystem contained few organisms. This paper describes a new ostracod fauna from the microbialites-bearing Permian-Triassic (P-Tr) strata at Zuodeng, Guangxi, China. One thousand and seventy ostracod specimens were extracted from forty-eight samples. Fifty-three species belonging to fourteen genera were identified. Ostracods, primarily from the Family Bairdiidae, were extremely abundant in the microbialites, which suggests that the ostracods were opportunists able to survive within this special microbial ecosystem with sufficient food and scarce competitors and predators rather than undergoing a rapid and early recovery after the end-Permian mass extinction event. Ostracods present simultaneous Paleozoic and Meso-Cenozoic affinities. The similarities and differences among the ostracod faunas in the microbialites at the P-Tr boundary secctions around the Paleo-Tethys indicate that there was a long-distance dispersion of ostracods. However, the faunas maintained endemism at the specific level. Previous studies have regarded microbialites as whole units, and it is difficult to detect environmental changes within a microbialite interval based on paleoecological groups of (super) families. In this study, high-density sampling was applied to identify changes of abundance, diversity, and composition of assemblages of ostracods. The proportion of five dominant species at the section exhibited an evolutionary trend from the "Bairdia" group to the "Liuzhinia antalyaensis-Bairdiacypris ottomanensis" group. Furthermore, the evolution of the ostracod fauna was divided into six stages according to the changes of dominant species, which indicates that the microbialite environment was not entirely constant but fluctuated during the post-extinction interval. Article in Journal/Newspaper Ocean acidification Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Palaeogeography, Palaeoclimatology, Palaeoecology 535 109349 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
end-Permian mass extinction Ostracod evolution paleoecology paleoenvironment [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
end-Permian mass extinction Ostracod evolution paleoecology paleoenvironment [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Wan, Junyu Yuan, Aihua Crasquin, S. Jiang, Haishui Yang, Hao Hu, Xia High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China |
topic_facet |
end-Permian mass extinction Ostracod evolution paleoecology paleoenvironment [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
International audience After the end-Permian mass extinction (EPME), the marine environment was considered extremely toxic, which was mainly due to the anoxic and high-temperature conditions and ocean acidification; thus, the ecosystem contained few organisms. This paper describes a new ostracod fauna from the microbialites-bearing Permian-Triassic (P-Tr) strata at Zuodeng, Guangxi, China. One thousand and seventy ostracod specimens were extracted from forty-eight samples. Fifty-three species belonging to fourteen genera were identified. Ostracods, primarily from the Family Bairdiidae, were extremely abundant in the microbialites, which suggests that the ostracods were opportunists able to survive within this special microbial ecosystem with sufficient food and scarce competitors and predators rather than undergoing a rapid and early recovery after the end-Permian mass extinction event. Ostracods present simultaneous Paleozoic and Meso-Cenozoic affinities. The similarities and differences among the ostracod faunas in the microbialites at the P-Tr boundary secctions around the Paleo-Tethys indicate that there was a long-distance dispersion of ostracods. However, the faunas maintained endemism at the specific level. Previous studies have regarded microbialites as whole units, and it is difficult to detect environmental changes within a microbialite interval based on paleoecological groups of (super) families. In this study, high-density sampling was applied to identify changes of abundance, diversity, and composition of assemblages of ostracods. The proportion of five dominant species at the section exhibited an evolutionary trend from the "Bairdia" group to the "Liuzhinia antalyaensis-Bairdiacypris ottomanensis" group. Furthermore, the evolution of the ostracod fauna was divided into six stages according to the changes of dominant species, which indicates that the microbialite environment was not entirely constant but fluctuated during the post-extinction interval. |
author2 |
China University of Geosciences Wuham (CUG) Micropaléontologie Université Pierre et Marie Curie - Paris 6 (UPMC) Centre de Recherche en Paléontologie - Paris (CR2P) Muséum national d'Histoire naturelle (MNHN)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Wan, Junyu Yuan, Aihua Crasquin, S. Jiang, Haishui Yang, Hao Hu, Xia |
author_facet |
Wan, Junyu Yuan, Aihua Crasquin, S. Jiang, Haishui Yang, Hao Hu, Xia |
author_sort |
Wan, Junyu |
title |
High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China |
title_short |
High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China |
title_full |
High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China |
title_fullStr |
High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China |
title_full_unstemmed |
High-resolution variation of ostracod assemblages from microbialites near the Permian-Triassic boundary at Zuodeng, Guangxi, South China |
title_sort |
high-resolution variation of ostracod assemblages from microbialites near the permian-triassic boundary at zuodeng, guangxi, south china |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02613951 https://hal.archives-ouvertes.fr/hal-02613951/document https://hal.archives-ouvertes.fr/hal-02613951/file/Wan%20et%20al.2019%2004%2016%20SC.pdf https://doi.org/10.1016/j.palaeo.2019.109349 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 0031-0182 Palaeogeography, Palaeoclimatology, Palaeoecology https://hal.archives-ouvertes.fr/hal-02613951 Palaeogeography, Palaeoclimatology, Palaeoecology, Elsevier, 2019, 535, pp.109349. ⟨10.1016/j.palaeo.2019.109349⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.palaeo.2019.109349 hal-02613951 https://hal.archives-ouvertes.fr/hal-02613951 https://hal.archives-ouvertes.fr/hal-02613951/document https://hal.archives-ouvertes.fr/hal-02613951/file/Wan%20et%20al.2019%2004%2016%20SC.pdf doi:10.1016/j.palaeo.2019.109349 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.palaeo.2019.109349 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
535 |
container_start_page |
109349 |
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