Was the Late Ordovician mass extinction truly exceptional?

CMØ Rasmussen, TRA Vandenbroucke… - Trends in Ecology & …, 2023 - cell.com
Abstract The Late Ordovician mass extinction event is the oldest of the five great extinction
events in the fossil record. It has long been regarded as an outlier among mass extinctions …

[HTML][HTML] The past to unravel the future: Deoxygenation events in the geological archive and the anthropocene oxygen crisis

AM Mancini, F Lozar, R Gennari, R Capozzi… - Earth-Science …, 2024 - Elsevier
Despite the observation that we are witnessing a true oxygen crisis, the ocean
deoxygenation theme is getting less attention from the media and population compared to …

Continental configuration controls ocean oxygenation during the Phanerozoic

A Pohl, A Ridgwell, RG Stockey, C Thomazo, A Keane… - Nature, 2022 - nature.com
The early evolutionary and much of the extinction history of marine animals is thought to be
driven by changes in dissolved oxygen concentrations ([O2]) in the ocean,–. In turn,[O2] is …

Impact of global climate cooling on Ordovician marine biodiversity

DE Ontiveros, G Beaugrand, B Lefebvre… - Nature …, 2023 - nature.com
Global cooling has been proposed as a driver of the Great Ordovician Biodiversification
Event, the largest radiation of Phanerozoic marine animal Life. Yet, mechanistic …

Syndepositional and diagenetic processes in the pigmentation of Middle Ordovician carbonate red beds in South China

M Liu, C Fang, D Chen - Sedimentary Geology, 2024 - Elsevier
Marine red beds (MRBs) are often attributed to specific redox environments during
syndepositional and early diagenetic phases. During the Middle Ordovician, a succession of …

The Ordovician of Scandinavia: a revised regional stage classification

AT Nielsen, P Ahlberg, JOR Ebbestad… - Geological Society …, 2023 - lyellcollection.org
Abstract The Ordovician of Scandinavia (ie Denmark, Norway and Sweden) has been
investigated for over two centuries and, through time, various chronostratigraphic schemes …

Mercury isotope evidence for Middle Ordovician photic-zone euxinia: Implications for termination of the Great Ordovician biodiversification event

M Liu, W Yuan, C Fang, X Wang, N Tan, M Zhao… - Gondwana …, 2025 - Elsevier
Abstract The Darriwilian (Middle Ordovician) is marked by a striking peak of the Great
Ordovician Biodiversification Event (GOBE) followed by an abrupt∼ 50% decline in …

Ordovician–Silurian true polar wander as a mechanism for severe glaciation and mass extinction

X **g, Z Yang, RN Mitchell, Y Tong, M Zhu… - Nature …, 2022 - nature.com
Abstract The Ordovician–Silurian transition experienced severe, but enigmatic, glaciation, as
well as a paradoxical combination of mass extinction and species origination. Here we …

Opportunities for earth observation to inform risk management for ocean tip** points

RA Wood, JA Baker, G Beaugrand, J Boutin… - Surveys in …, 2024 - Springer
As climate change continues, the likelihood of passing critical thresholds or tip** points
increases. Hence, there is a need to advance the science for detecting such thresholds. In …

Redox changes in the Iapetus Ocean during the Late Ordovician extinction crises

A Sánchez-Roda, PB Wignall, Y **ong… - Journal of the …, 2024 - lyellcollection.org
The cause of the Late Ordovician mass extinction (LOME) is widely debated, with glaciation,
volcanism and oceanic redox fluctuations being proposed as possible drivers. Here, we …