Several types of organisms lived in the water such as acanthodians, fusulinids, rugose corals, crinoids, etc. There were several types of insects, plants, and terrestrial organisms. New organisms came to be after the extinction, when the Triassic period was well underway such as large mammals and reptiles.
During the Permian period Earth looked very different from its appearance today. During this era, the smaller continents of the planet had been forced together to form Pangea.