The Carboniferous is a geologic period and system of the Paleozoic era that spans 60 million years, from the end of the Devonian Period 358.86 Ma to the beginning of the Permian Period, 298.9 Ma. From Wikipedia
Fossilized clawed tracks from early Carboniferous sandstone in Australia suggest amniotes emerged far earlier than previously believed, reshaping tetrapod evolution theories.
