In the end, it was the worst possible timing for the reptile rulers of Earth. It was all too much and extinction was the name of the new game. That of course made room for us, those little tiny mammals always underfoot.
Then again, we should take heed of this new finding. Replace volcanic activity with pollution from the industrial age and the pre-asteroid strike ancient Earth's environment sounds a lot like our own in the twenty-first century. We had better hope there is no asteroid out there ... no large mountain-sized one that is ... with our name on it. It looks like we are set up for the same bad timing, last straw moment as the previous dominant denizens of the planet. In the meantime, we better work hard on fixing the damage we've done just in case that next massive asteroid does happen along. It would be nice if we had one or two extra straws available, don't you think?