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1. Major coral extinctions during the early Toarcian global warming event

   https://doi.org/10.1016/j.gloplacha.2021.103647  

   Vasseur, R.; Lathuilière, B.; Lazăr, I.; Martindale, R.C.; Bodin, S.; Durlet, C. (December 2021, Global and Planetary Change)
2. Global controls on phosphatization of fossils during the Toarcian Oceanic Anoxic Event

   https://doi.org/10.1038/s41598-021-03482-7  

   Sinha, Sinjini; Muscente, A. D.; Schiffbauer, James D.; Williams, Matt; Schweigert, Günter; Martindale, Rowan C. (December 2021, Scientific Reports)

   Abstract Konservat-Lagerstätten—deposits with exceptionally preserved fossils—vary in abundance across geographic and stratigraphic space due to paleoenvironmental heterogeneity. While oceanic anoxic events (OAEs) may have promoted preservation of marine lagerstätten, the environmental controls on their taphonomy remain unclear. Here, we provide new data on the mineralization of fossils in three Lower Jurassic Lagerstätten—Strawberry Bank (UK), Ya Ha Tinda (Canada), and Posidonia Shale (Germany) —and test the hypothesis that they were preserved under similar conditions. Biostratigraphy indicates that all three Lagerstätten were deposited during the Toarcian OAE (TOAE), and scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) show that each deposit contains a variety of taxa preserved as phosphatized skeletons and tissues. Thus, despite their geographic and paleoenvironmental differences, all of these Lagerstätten were deposited in settings conducive to phosphatization, indicating that the TOAE fostered exceptional preservation in marine settings around the world. Phosphatization may have been fueled by phosphate delivery from climatically-driven sea level change and continental weathering, with anoxic basins acting as phosphorus traps. 

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3. Carbonate uranium isotopes record global expansion of marine anoxia during the Toarcian Oceanic Anoxic Event

   https://doi.org/10.1073/pnas.2406032121  

   Remírez, Mariano N; Gilleaudeau, Geoffrey J; Gan, Tian; Kipp, Michael A; Tissot, François_L H; Kaufman, Alan J; Parente, Mariano (July 2024, Proceedings of the National Academy of Sciences)

   The Toarcian Oceanic Anoxic Event (T-OAE; ~183 Mya) was a globally significant carbon-cycle perturbation linked to widespread deposition of organic-rich sediments, massive volcanic CO₂release, marine faunal extinction, sea-level rise, a crisis in carbonate production related to ocean acidification, and elevated seawater temperatures. Despite recognition of the T-OAE as a potential analog for future ocean deoxygenation, current knowledge on the severity of global ocean anoxia is limited largely to studies of the trace element and isotopic composition of black shales, which are commonly affected by local processes. Here, we present the first carbonate-based uranium isotope (δ²³⁸U) record of the T-OAE from open marine platform limestones of the southeastern Tethys Ocean as a proxy for global seawater redox conditions. A significant negative δ²³⁸U excursion (~0.4‰) is recorded just prior to the onset of the negative carbon isotope excursion comprised within the T-OAE, followed by a long-lived recovery of δ²³⁸U values, thus confirming that the T-OAE represents a global expansion of marine anoxia. Using a Bayesian inverse isotopic mass balance model, we estimate that anoxic waters covered ~6 to 8% of the global seafloor during the peak of the T-OAE, which represents 28 to 38 times the extent of anoxia in the modern ocean. These data, combined with δ²³⁸U-based estimates of seafloor anoxic area for other CO₂-driven Phanerozoic OAEs, suggest a common response of ocean anoxia to carbon release, thus improving prediction of future anthropogenically induced ocean deoxygenation. 

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4. Evidence for rapid weathering response to climatic warming during the Toarcian Oceanic Anoxic Event

   https://doi.org/10.1038/s41598-017-05307-y  

   Them, Theodore R.; Gill, Benjamin C.; Selby, David; Gröcke, Darren R.; Friedman, Richard M.; Owens, Jeremy D. (December 2017, Scientific Reports)
5. Response of macrobenthic communities to the Toarcian Oceanic Anoxic Event in northeastern Panthalassa (Ya Ha Tinda, Alberta, Canada)

   https://doi.org/10.1016/j.palaeo.2017.01.009  

   Martindale, Rowan C.; Aberhan, Martin (July 2017, Palaeogeography, Palaeoclimatology, Palaeoecology)