The Day the Mesozoic Died

People thought the dinosaurs died off slowly, but other people discovered that it really didn't happen that way. They found a clay layer that showed that none of the earlier fossils were still there. The clay layer was really weird, and they set out to find out why there was clay there and what it meant. Later down the road they discovered that an astroid had hit the Earth, but they couldn't find the crater. Around the Gulf of Mexico they found the crater, and all the puzzle pieces went together to explain the day the Mesozoic died.