1、The supercontinent Pangaea was a protocontinent that existed during the late Paleozoic and early Mesozoic eras.
超大陆盘古大陆是一种原大陆，在晚古生代和早中生代时存在。
2、Protocontinents played a crucial role in the formation and breakup of ancient supercontinents.
原大陆在古老的超大陆的形成和分裂中起着至关重要的作用。