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
Toms Canyon impact crater Toms Canyon impact crater The Toms Canyon impact crater is a probable impact crater where one or more asteroids struck the Atlantic continental shelf, about east of Atlantic City, New Jersey. The submarine canyon is the drowned glacial-age mouth of Toms River. The crater dates to the late Eocene geological time period (about 35 million years ago), and may have been formed by the same event as the larger Chesapeake Bay impact crater (and possibly the Popigai crater in Siberia), to the southwest at the mouth of Chesapeake Bay, also dating to the late Eocene. Seismic reflection profiles, studied by