Cisuralian
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The Cisuralian is the first series/epoch of the Permian. The Cisuralian was preceded by the Pennsylvanian and followed by the Guadalupian. The Cisuralian Epoch is named after the western slopes of the Ural Mountains in Russia and Kazakhstan and dates between 298.9 ± 0.15 – 272.3 ± 0.5 Ma.
Dimetrodon, a pelycosaur, was at the top of the food chain in the Cisuralian
Permian
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The Permian is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period 298.9 million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the region of Perm in Russia.
Selwyn Rock, South Australia, an exhumed glacial pavement of Permian age
Hercosestria cribrosa, a reef-forming productid brachiopod (Middle Permian, Glass Mountains, Texas)
Fossil and life restoration of Permocupes sojanensis a permocupedid beetle from the Middle Permian of Russia
Edaphosaurus pogonias and Platyhystrix – Early Permian, North America and Europe