Journal of Micropalaeontology
Journal of Micropalaeontology
JM
Articles | Volume 44, issue 2
Articles | Volume 44, issue 2
https://doi.org/10.5194/jm-44-319-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-44-319-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 44, issue 2
Research article
 | 
11 Sep 2025
Research article |  | 11 Sep 2025

Refining chitinozoan biostratigraphy through the early and late Aeronian biogeochemical events on Anticosti Island, Quebec, eastern Canada

Fien Marie Raf Jonckheere, Carolina Klock, André Desrochers, Pascale Daoust, and Thijs R. A. Vandenbroucke

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Short summary
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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