Potential Causes of the Dinosaur Extinction 65 Million Years Ago

Why did the dinosaurs and many other plant and animal species suddenly go extinct 65 million years ago? Numerous theories have been proposed: the spread of a lethal virus, climatic changes caused by the drift of continents, a supernova explosion, or more speculative hypotheses of environmental degradation due to pollution produced by an advanced, technological reptilian civilization.

In 1977, it was discovered that Mesozoic lands contain an anomalous amount of iridium, probably a trace of a catastrophic event.

From this, theories have arisen that interpret this data as the result of a series of violent volcanic eruptions or the now widely accepted hypothesis of a massive meteorite impact on the Earth’s surface.