Timeline of Cretaceous–Paleogene extinction event research Hildebrand and William Boynton reported the Chicxulub crater in the Yucatan peninsula of Mexico as a probable impact site. While the controversy continued, the accumulating evidence gradually began to sway the scientific community toward the Alvarez hypothesis. In 2010, an international panel of researchers concluded that impact best explained the extinction event and that Chicxulub was indeed the resulting crater. Because the estimated date of the object's impact and the Cretaceous–Paleogene boundary (K–Pg boundary) coincide, there is now a scientific consensus that this impact was the Cretaceous–Paleogene extinction event which caused the death of most of the planet's non-avian dinosaurs
Chicxulub crater analysis, arguing that there might only be gaps of hours to days between impacts in a multiple-impact scenario (cf. Shoemaker-Levy 9) which would not leave a detectable gap in deposits. Chicxulub is the only known Earth crater with a remaining impact peak ring, but it is under of sediment. During April and May 2016, a joint IODP-ICDP Mission Specific Platform Expedition no. 364 obtained the first offshore core samples from the peak ring, the central zone of the crater. During Expedition 364, DES drillers on the "L/B Myrtle" collected core samples to enable ECORD Science Party members to study how