"Discovery of a large impact crater beneath the North Atlantic Ocean reveals that more than one asteroid could have spelled doom for the dinosaurs". (ScitechDaily.com/ Massive Impact Crater Beneath the North Atlantic Reveals Dinosaur-Killing Asteroid Wasn’t Alone) There is the possibility that the asteroid which killed dinosaurs was not alone. Or maybe that astroid crushed in pieces before it impacted on the ground. There is the possibility that only some part of that asteroid hit to Yucatan peninsula. But it's possible that the Gulf of Mexico and Hudson's bay, along with Azov's sea form in the impact of large-size meteorites. The form of those bays tells that they could be the remnants of meteorite craters. The fact is that the asteroid that killed dinosaurs was not the first or the last object that impacted Earth. Things like ice ages are also sometimes suspected to be the result of a meteor impact. When somebody says that volcanic eruptions killed dinosaurs ...