Death metal—how nickel played a role in the world's worst mass extinction
Monday, April 17, 2017 - 07:32
in Paleontology & Archaeology
Around 250 million years ago, life on Earth nearly came to an end, in a mass extinction between the Permian and Triassic periods known as the Great Dying. Some 90% of the species in the oceans and 70% of vertebrate families on land were killed, and the great marine life experiment of the Palaeozoic era was brought to a halt.