Living on the edge: Response of Late Cretaceous rudist bivalves (Hippuritida) to hot and highly seasonal climate in the low-latitude Saiwan site, Oman

de Winter, Niels J.; al Fudhaili, Najat; Arndt, Iris; Claeys, Philippe; Fraaije, René; Goderis, Steven; Jagt, John; López Correa, Matthias; Munnecke, Axel; Stolarski, Jarosław; Ziegler, Martin

doi:10.5194/cp-21-2361-2025

Articles | Volume 21, issue 11

https://doi.org/10.5194/cp-21-2361-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/cp-21-2361-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 11

Research article

|

21 Nov 2025

Research article |

| 21 Nov 2025

Living on the edge: Response of Late Cretaceous rudist bivalves (Hippuritida) to hot and highly seasonal climate in the low-latitude Saiwan site, Oman

Niels J. de Winter, Najat al Fudhaili, Iris Arndt, Philippe Claeys, René Fraaije, Steven Goderis, John Jagt, Matthias López Correa, Axel Munnecke, Jarosław Stolarski, and Martin Ziegler

Data sets

Supplementary Information to: "Living on the edge: Response of rudist bivalves (Hippuritida) to hot and highly seasonal climate in the low-latitude Saiwan site, Oman" Niels de Winter https://doi.org/10.5281/zenodo.12567712

Short summary

To test the tolerance of past shallow marine ecosystems to extreme climates, we collected and compiled stable and clumped isotope data from rudist (Order Hippuritida) bivalves that lived in tropical shallow marine waters in present-day Oman during the Campanian (75 million years ago). Our dataset shows that these animals were able to withstand exceptionally warm temperatures, exceeding 40 °C, during hot summers. Our finding highlights how seasonal climate extremes impact marine biodiversity.