During this period, the s
During this period, the salty Zechstein Sea covered much of Europe. The Dimetrodon was a dominant predator during this period, during which a single large ocean known as Panthalassa surrounded the supercontinent Pangaea. This last period of the Paleozoic Era succeeded the Carboniferous. For 10 points, name this period of about 300 to 250 million years ago, at the end of which as many as ninety-five percent of the then-extant species may have died out in a mass extinction.
During this period, the salty Zechstein Sea covered much of Europe.
{Permian} Period