link to a BBC article about the death of the dinosaurs, Musk tweeted: "This will happen again – just a matter of time", seemingly referring to civilisation's potential impending doom.READ MORE: People who died and came back to life reveal the mystery of those very last momentsThe article read: "The asteroid that ended the Cretaceous took with it famous dinosaurs like Tyrannosaurus and Triceratops, as well as lesser-known but bizarre creatures like Anzu, or the 'chicken from hell'."It then went on to describe how small rodent-like animals such as the Purgatorius, as well as our distant ancestors, then took the place of the planet's former inhabitants.Musk's many fans chimed in, with one saying adding: "Already happening".Another speculated: "Well in the past 10% of the Earth's past we know there have been 5 major mass extinctions.
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