wildfires have occurred on the Earth
... that wildfires have occurred on the Earth for over 420 million years?
... that <b id="mwAhc"><a href="./Fossil_record_of_fire" id="mwAhg" rel="mw:WikiLink" title="Fossil record of fire">wildfires have occurred on the Earth</a></b> for over <span about="#mwt14" class="nourlexpansion plainlinks" data-mw='{"parts":[{"template":{"target":{"wt":"Ma","href":"./Template:Ma"},"params":{"1":{"wt":"420"},"2":{"wt":"million years"}},"i":0}}]}' id="mwAhk" style="white-space:nowrap;" typeof="mw:Transclusion"><a class="external text" href="https://geoltime.github.io/?Ma=420" rel="mw:ExtLink nofollow">420</a> million years</span>?