The controversy over the cause of the dinosaur extinction continues among paleontologists. However, evidence from a deep sea core drilled off the coast of Florida proves that an asteroid hit the Earth at the end of the Cretaceous which caused the dinosaur extinction. Most dinosaur specialists are willing to accept that an asteroid hit the Earth, but
some do not think that it was the sole cause of the Mesozoic extinctions. Instead, they
claim that dinosaurian diversity was already in decline by the end of the Cretaceous. The asteroid impact may have been "the straw that broke the camel's back."
here to learn more about dinosaur extinction theories.