Deoxygenation levels similar to today’s played major role in marine extinctions 200 million years ago
A core sample of ~201 million year old sediments obtained from the Carnduff-2 core, drilled in the Larne Basin (Northern Ireland), showing the shell of an animal that lived on the seabed shortly after the Triassic–Jurassic global mass extinction. Credit: Prof. Micha Ruhl, Trinity College Dublin
Scientists have made a surprising discovery that sheds new light on the role that oceanic deoxygenation (anoxia) played in one of the…