Permo-Triassic mass extinction

Permo-Triassic mass extinction

[¦pər·mō trī¦as·ik ¦mas ik′stiŋk·shən]
(evolution)
A mass extinction event marking the division between the Permian Period and the Triassic Period as well as the border between the Paleozoic and Mesozoic eras. It is estimated to have triggered the extinction of 85% or more of all ocean species, approximately 70% of land vertebrates, and significant extinctions of plants and insects.
References in periodicals archive ?
London, Sept 15 (ANI): Scientists have provided new clue to the cause of Earth's largest environmental catastrophe, the Permo-Triassic mass extinction, when eruption of giant masses of magma in Siberia 250 million years ago led to extinction of more than 90 percent of all species.