Fig. 6: Generalized chemostratigraphic trends of the latest Devonian and the relationship to biotic change.
From: Photic-zone euxinia had a major role in the Devonian-Carboniferous boundary mass extinction

Integrated excursions of inorganic carbon isotope (δ13Ccarb; Longan and Duli (this study); Longmenshan10), lithium isotope10, Hg isotopes (Δ199Hg and δ202Hg), genera number of stromatoporoid and rugose coral55, and δ18Oapatite56 across the end-Devonian Hangenberg crisis. ckI costatus-kockeli interregnum, k kockli, SD standard deviation.