From 230 million to 280 million years ago; reptiles; Also called: Permian period.
(Pertaining to) last period of Paleozoic era.
Period of geological time 290–245 million years ago, the last period of the Paleozoic era. Its end was marked by a significant change in marine life, including the extinction of many corals and trilobites. Deserts were widespread, and terrestrial amphibians and mammal-like reptiles flourished. Cone-bearing plants (gymnosperms) came to prominence.