Data for Oceanic euxinia and seafloor oxygenation linked to continental weathering and influxes during the Late Devonian Frasnian–Famennian bio-crisis and Annulata bio-event

the dataset is used to test the hypotheses that the oceanic euxinia was contributed by land input of nutrients and seafloor was likely oxygenated by hyperpycnal flows, in the Late Devonian Seaway, during the F-F bio-crisis. It also proves that the watermass of the seaway became weakly restricted after the F-F bio-crisis and the seafloor redox shifted from relative oxygenation to silled euxinia. Under such hydrographic and seafloor redox backgrounds, the dataset proves that the silled euxinia was enhanced by continental input during the Annulata bio-event.