landmass

1.At the end of the Permian period the earth's landmasses were configured into one supercontinent, Pangea, and a superocean, Panthalassa.

二叠纪末期，地球上的地合并成块级大，叫作盘古大，以及级大海，叫作原始大洋。

2.The protocontinent of the Southern Hemisphere, a hypothetical landmass that according to the theory of plate tectonics broke up into India, Australia, Antarctica, Africa, and South America.

冈瓦纳大：南半球块假定性的大，根据地壳构造学说，这块大分离成印度，澳大利亚，南，非和南美