The palynology of the Toarcian Oceanic Anoxic Event at Dormettingen, southwest Germany, with emphasis on changes in vegetational dynamics


"The Toarcian Oceanic Anoxic Event (T-OAE; ~ 183 Ma) represents an episode of marine anoxia that lasted for several hundred thousand years. Abiotic factorscontributing to the formation of the T-OAE, such as global warming, changes in weathering intensity, or sea-level change, are associated with a marked change in carbon cycling. While these factors are well studied, detailed palynological data, including marine and terrestrial palynomorphs, is still missing. Here we present comprehensive palynological data from the sedimentologically and geochemically well constrained T-OAE section in Dormettingen (SW Germany). [...]".


Source: Science Direct 
Authors: Francesca Galasso et al.

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Fossil site shows impact of early Jurassic's low oxygen oceans


Using a combination of fossils and chemical markers, scientists have tracked how a period of globally low ocean-oxygen turned an Early Jurassic marine ecosystem into a stressed community inhabited by only a few species.

Source: Science Daily

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