Opens in Google Earth* NASA JPL: "A 'Smoking Gun' for Dinosaur Extinction", March 6, 2003* Chicxulub, Crater of Doom* "Doubts On Dinosaurs" – Scientific American.
Opens in Google Earth*NASA JPL: "A 'Smoking Gun' for Dinosaur Extinction", March 6, 2003*Chicxulub, Crater of Doom*"Doubts On Dinosaurs" – Scientific American.