Temperate climate plant fossils are found in Antartica because maybe Antartica was once a sea. The sea will be very likely to have plant fossils, such as corals or seaweed. Overtime, the cold weather must have arrived and killed most of the underwater creatures that didn't adapt fast enough to the climate. Therefore, the plant fossils are formed and preserve in the ice. Some plant fossils may have formed before the cold weather arrived, but also preserved. That may be one reason that temperate plant fossils are found in Antartica.
Another reason may be that Antartica was once land, neither desert or common climate. During that time, it must have been a home to all the plants that lived there. Again, some may lived until the cold weather reaches the place and the ones that lived until the cold weather didn't survive and both was preserved. Therefore, there may have been much life in Antartica then than now; Antartica may have been with all the other continents and formed Pangaea.
Another reason may be that Antartica was once land, neither desert or common climate. During that time, it must have been a home to all the plants that lived there. Again, some may lived until the cold weather reaches the place and the ones that lived until the cold weather didn't survive and both was preserved. Therefore, there may have been much life in Antartica then than now; Antartica may have been with all the other continents and formed Pangaea.
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