Trabucho Alexandre, J., Tuenter, E., Henstra, G., van der Zwan, K., van de Wal, R., Dijkstra, H., & de Boer, P. (2010). The mid-Cretaceous North Atlantic nutrient trap: Black shales and OAEs. Paleoceanography, 25(4), Article PA4201. https://doi.org/10.1029/2010pa001925