An analysis of biomarkers and their stable isotopic compositions from the Bristol Channel Basin at St. Audrie’s Bay and Lilstock, United Kingdom, has shed new light on when one of the largest mass extinction events on Earth occurred. Schematic diagram showing the factors driving global ecological change in the modern day and at the end of the Triassic period. Image credit: Victor Lesh. Most of the major mass extinctions of the last 300 million years,...
