570.00 MILLION YEARS AGO - 240.00 MILLION YEARS AGO : Paleozoic Era

Paleozoic Era

        The Paleozoic Era begins about 570 million years ago with the first shelled animals.It ends about 240 million years ago with the largest mass extinction in Earth’s history. During this era, the continents of the southern hemisphere remain joined, making up the landmass known as Gondwanaland. Toward the end of the era, the continents of the northern hemisphere join together and merge with Gondwanaland to form a single landmass called Pangaea.