At www.livescience.com/60944-ancient-fossil-forest-discovered-in-antarctica… … a forest that seems to have been fossilised (growing wood turned to stone) at the end of Permian event has been discovered in the Transantarctic Mountains. What is peculiar is that the press release or study assumes the trees were growing at the South Pole at the time, suggesting they somehow coped with living with 6 months of darkness and 6 months of daylight. Surely continental drift or Plate movement would have located Antarctica somewhere other than the South Pole – but these are the words we can read at the link above….
… a fossilised Glossopteris tree. It was apparently covered in volcanic ash and turned to stone. See also https://en.wikipedia.org/wiki/Glossopteris … from the Greek, glossa = tongue. They were once considered ferns but nowadays not so. They evolved in early Permian times and became extinct at the end of Permian event.