What are the three theories for the extinction of the dinosaurs

Many Theories, No Proof

Dinosaurs roamed the earth for 160 million years until their sudden demise some 65.5 million years ago, in an event now known as the Cretaceous-Tertiary, or K-T, extinction event.

(“K” is the abbreviation for Cretaceous, which is associated with the German word “Kreidezeit.”) Besides dinosaurs, many other species of mammals, amphibians and plants died out at the same time.

Over the years, paleontologists have proposed several theories for this extensive die-off.

One early theory was that small mammals ate dinosaur eggs, thereby reducing the dinosaur population until it became unsustainable. Another theory was that dinosaurs’ bodies became too big to be operated by their small brains.

How long did dinosaurs roam the earth

Some scientists believed a great plague decimated the dinosaur population and then spread to the animals that feasted on their carcasses. Starvation was another possibility: Large dinosaurs required vast amounts of food and could have stripped bare all the vegetation in their habitat.

But many of these theories are easily dismissed. If dino

during which period did dinosaurs go extinct

in which era did dinosaurs go extinct