The glossopteris
fossils tell us that the early positions of the continents were once combined
or amalgamated into a supercontinent---the Pangea. The Glossopteridales
turn out in the Southern Hemisphere around 298.9 million
years ago, the beginning of the Permian Period.
The flora, glossopteris
of the south grew in a cold, wet climate, while that of the north existed under
warm conditions. Based on the sheer number of leaf fossils found and the fact
that the plants grew in a temperate climate at middle to high latitudes,
therefore, the continent before has a temperate climate, wet to warm climate.
