Fig. 1: Global Toarcian paleogeography.
From: Global ocean redox changes before and during the Toarcian Oceanic Anoxic Event

Negative carbon isotope excursion locations40 used to identify the Toarcian Oceanic Anoxic Event are shown. The core used in this study was deposited along the western margin of Laurasia (proto-North America) and was connected to the Panthalassa ocean. Paleogeography modified from the PaleoMAP Project (Scotese, 2021)82.