Element mass fractions, element/Ca ratios and carbon, oxygen and boron isotope composition for bivalves and brachiopods from the Early Jurassic Toarcian Oceanic Anoxic Event in SW Europe

Biv = Bivalve; B = Brachiopod.
Sample code includes stratigraphic interval, sample ID and specimen number as provided by Ullmann et al (2020).
The B concentrations are from measurements on ICP-MS (Neptune Plus) and have a 2rsd of 9% (n=108). Also, there is a scale uncertainty of about 10%; the sample weights ranged usually between 5-10 mg. […]