Until 1990, an oil exploration team in the Gocatn Peninsula of Mexico stumbled across a huge crater. Most of this crater was submerged on the ocean floor near the Yucatan Peninsula, with a width of about 160 to 240 kilometers. The age of the sediment covering the crater shows that this huge crater formed about 65 million years ago, which coincides with the era of dinosaur extinction. The discovery of this evidence led scientists to basically reach a consensus: the dinosaur's Extinction was caused by the impact of this meteorite on the earth. This passage indicates such a point:. ['No one would think that the extinction of dinosaurs was caused by a meteorite impact on the earth before 1990.', 'The discovery of the crater makes scientists more consistent in understanding the causes of dinosaur extinction.', 'The area near the Yucatan Peninsula 65 million years ago was densely populated with dinosaurs.', 'The crash of a meteorite is a natural phenomenon.']