For decades, museums and textbooks confidently asserted that mud rocks—such as limestone, siltstone, mudstone, and shale—were formed over vast eons as super-fine sediments slowly settled to the bottom of shallow lakes or seas.

In 1980, a theory was proposed that an asteroid or comet impact was primarily responsible for the mass dinosaur extinctions that were observed in the fossil record. But while the impact tale has become widely accepted in popular culture, critical questions remain unanswered.

“The last of the dinosaurs died out 65 million years ago,”¹ according to an unsupported claim by evolutionary researchers that has been popularized in books and movies such as Jurassic Park. This conclusion is so ubiquitous that most people don’t even question whether or not it’s true.