In March 2010 an international panel of scientists endorsed the asteroid hypothesis, specifically the Chicxulub impact, as being the cause of the extinction.
Impact crater | crater | impact crater | Crater Lake | Crater Lake National Park | Crater National Forest | crater lake | Chicxulub crater | Chicxulub | Volcanic crater | Manicouagan crater | Luba Crater Scientific Reserve | Hooge Crater Commonwealth War Graves Commission Cemetery | Explosion crater | Chicxulub, Yucatán | Belopol'skiy (crater) | Battle of the Crater | Wolfe Creek Crater | Wilkes Land crater | The Ghost of Creaky Crater | The Crater Lake Monster | Saint Martin crater | Punchbowl Crater | Phocylides (crater) | Onepoto (volcanic crater) | O'Day (crater) | Obolon' crater | Moulton (crater) | Kibal'chich (crater) | Kebira Crater |
The Flora family of asteroids may be the source of the Chicxlub (Cretaceous–Paleogene) impactor, the likely culprit in the extinction of the dinosaurs.
Gerta Keller (born 1945) is a paleontologist who contests the Alvarez hypothesis that the Chicxulub caused the mass extinction 66 million years ago.
In 2007, Bottke published a paper in Nature (with David Vokrouhlicky and David Nesvorny), proposing that the asteroid that produced the Chicxulub Crater and caused the Cretaceous mass extinction (although the latter is still contended) formed during an asteroid breakup in the main asteroid belt approximately 160 million years ago.