Articles | Volume 43, issue 2
https://doi.org/10.5194/jm-43-475-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-43-475-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Dec 2024
Research article |
| 09 Dec 2024
| 09 Dec 2024
Chitinozoan biostratigraphy through the Aeronian–Telychian boundary interval on Anticosti Island, Canada
Carolina Klock
CORRESPONDING AUTHOR
Department of Geology, Ghent University, Ghent, Belgium
André Desrochers
Department of Earth and Environmental Sciences, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
Patrick I. McLaughlin
Illinois State Geological Survey, University of Illinois, Urbana–Champaign, Illinois 61790-4400, USA
Poul Emsbo
U.S. Geological Survey, Denver Federal Center, Denver, Colorado 80225, USA
Tim De Backer
Department of Geology, Ghent University, Ghent, Belgium
Fien M. Jonckheere
Department of Geology, Ghent University, Ghent, Belgium
Cristiana J. P. Esteves
Department of Geology, Ghent University, Ghent, Belgium
Thijs R. A. Vandenbroucke
Department of Geology, Ghent University, Ghent, Belgium
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Anticosti Island holds a well-preserved rock record of the Silurian, offering a unique look at chitinozoan microfossil evolution. During the late Aeronian event, we recognise the emergence and radiation of highly ornamented species, challenging the typical extinction pattern we observe in other Silurian events. This study also fills an important gap in the microfossil record of Anticosti Island, improving our understanding of this critical time.
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Anticosti Island holds a well-preserved rock record of the Silurian, offering a unique look at chitinozoan microfossil evolution. During the late Aeronian event, we recognise the emergence and radiation of highly ornamented species, challenging the typical extinction pattern we observe in other Silurian events. This study also fills an important gap in the microfossil record of Anticosti Island, improving our understanding of this critical time.
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Short summary
Anticosti Island has a well-preserved rock succession throughout the Aeronian–Telychian boundary in the Llandovery Epoch, Silurian period, which includes two important biogeochemical events, the late Aeronian and the Valgu. This study suggests the position of this boundary in Anticosti based on the correlation of the island’s chitinozoan assemblages with the global occurrences, confirming both a remarkable preservation of upper Aeronian rocks and the record of the Valgu event.
Anticosti Island has a well-preserved rock succession throughout the Aeronian–Telychian boundary...
