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By comparing evidence from different sources. It appears that the fossil records of large dinosaurs come to an abrupt end at a certain identifiable point in pre-history. Separate trails of evidence demonstrate massive world-wide deposits of volcanic ash around the same time. It's not as if we have news footage of the events, but we are always accumulating and analyzing data as it is uncovered.
First answer by Emdrgreg. Last edit by Emdrgreg. Contributor trust: 665 [recommend contributor]. Question popularity: 15 [recommend question]
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Answers.com > Wiki Answers > Categories > Animal Life > Prehistoric Animals > Dinosaurs > How did scientists know a meteor killed dinosaurs?
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Who killed dinosaurs? How were the Dinosaurs killed? How big meteorite killed dinosaurs? How meteors might have killed dinosaurs? When was the asteroid that killed dinosaurs? Did a meteor realy killed all the dinosou's? If the meteor didn't kill the dinosaurs what did? Where did the meteor that killed the dinosaurs hit? Where did the astroid that killed the dinosaurs hit? Arguments for and against dinosaurs being killed by an asteriod? How long did the meteor that killed the dinosaurs hit the earth? How could a meteor be responsible for the extinction of the dinosaurs? What did the scientist believe killed the dinosaurs anlong with 70of all other? When American scientists found iridium in the crater that killed the dinosaurs is this source true?
