Cretaceous–Paleogene boundary had been that no documented crater matched the event. This was not a lethal blow to the theory; while the crater resulting from the impact would have been larger than in diameter, Earth's geological processes hide or destroy craters over time. The Chicxulub crater (; ) is an impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is located near the town of Chicxulub, after which the crater is named. It was formed by a large asteroid or comet about in diameter, the Chicxulub impactor, striking the Earth. The date of the impact coincides precisely with the Cretaceous–Paleogene
Chicxulub, Yucatán (or "puerto") of Chicxulub, 6 km east of the nearest town, Progreso, lies almost exactly on the geographic center of the crater. The name Chicxulub is Yucatec Maya language, where "ch’ik" means "flea" or "tick", and "xulub’" means "devil, demon, or horns". Chicxulub, Yucatán Chicxulub ( "Ch’ik Xulub") is a town, and surrounding municipality of the same name, in the Mexican state of Yucatán. At the census of 2005, the town had a population of 5,052 people. Chicxulub is most famous for being near the geographic center of the Chicxulub crater, an impact crater discovered by geologists on the Yucatán