I was taut in school, but that’s another subject.
Some nerds crunched the numbers and decided this:
Researchers Discover That Global Mass Extinctions of Land-Dwelling Animals Follow a 27-Million-Year Cycle
SciTechDaily | December 10, 2020 | New York University
And some helpful person on FreeRepublic posted this image, by way of illustration:

That’s the good news. The bad news? It’s been 27 million years since this XXX-tinction.

If pre-history has taught me anything, it’s that Ringo Star and Dennis Quaid can solve this evolutionary problem together. Shelly Long may be needed in a pinch.
Zug-zug.
Was the Obama presidency that long ago?
Come to think of it, I WAS shown a lot of movies during my school years…
That was so Teacher and Principal (or Custodian) could go do the conch thing.
Oh look, it’s a prehistoric Giantganticus Turtleacus Horribleus. They were driven to extinction along with Mammoths and Mastodons by the usual suspects…white Europeans. Except for the ones driven to extinction in North and South America and Asia. We don’t what caused their extinction.