Fossil evidence of early life has been discovered by UNSW scientists in 3.48 billion year old hot spring deposits in the Pilbara of Western Australia - pushing back by 3 billion years the earliest known existence of inhabited terrestrial hot springs on Earth.
Read more at: https://phys.org/news/2017-05-oldest-evidence-life-billion-year-old-australian.html#jCpThe Late Heavy Bombardment took place "approximately 4.1 to 3.8 billion years (Ga) ago" which kept the Earth at oven temperatures. So we went from baking temperature to life capable of leaving fossils in 320 million years? The young Earthers refuse to admit an old planet, hoping to deny enough time for evolution. At some point, the random process explanation is going to run out of time.
Later in the article:
In September 2016, Professor Kranendonk was part of an international team that found what is possibly the oldest evidence of life on earth - 3.7 billion year old fossil stromatolites in Greenland deposits that were laid down in a shallow sea.