Permo-Triassic mass extinction

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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.

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permissive block system
permissive cell
permissive condition
permissive stop
permit
permittivity
Permo-Carboniferous
Permo-Triassic mass extinction
permselective membrane
permutation
permutation character
permutation group
permutation matrix
permutation modulation
permutation table

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