What was the largest tree ever to grow on earth? In all of history, in all of time, when did that tree stand?
There is a chance that it was not millions of years ago, but rather in recent history. In California. One of the great redwoods cut for land and timber and conquest may have been the largest tree that ever lived.
I think the felling of that tree was a turning point. It's strange to think that nothing may have marked it's passing.