Dinosaurs’ Extinction Was Caused By A Massive Asteroid Or Comet Smashing Into Earth
Surely ever since the first fossils of obviously extinct animals were found, humankind has wondered: “Why did they die?” A poignant question, for it has relevance to us — if extinct animals were wiped out by some catastrophe, couldn’t that just as easily happen to us? Could we be found as fossils someday, and would no one know why we died.
It has also been suggested that desease killed off the dinosaurs. A very deadly and contagious desease may have circulated among the dinosaurs forcing them to become extinct.
Still yet another theory is that the Earth just gradually changed in climate over a long time period and the dinosaurs were not able to adapt to the cooler, dryer climate.
The extinction event did not kill all animal and plant life. Many kinds of animals survived, including fishes, frogs, turtles, crocodilians, birds, and mammals. Scientists must take the fossil record and find reasons for all extinctions.
Most experts think the dinosaurs’ extinction was closely connected with the impact of a meteor near what’s now the tip of the Yucatan Peninsula — the so-called “Chicxulub impact” (pronounced CHEEK-shoe-lube).
An international panel of experts has strongly endorsed evidence that a space impact was behind the mass extinction event that killed off the dinosaurs. Their review of the evidence shows that the extinction was caused by a massive asteroid or comet smashing into Earth at Chicxulub on Mexico’s Yucatan Peninsula.