How do you think the dinosaurs died?
living then suddenly extinct
I think they died out little by little, until there was only a fraction of species left from millions of years before. Then, when the numbers had been diminished so extremely, there was a mass extinction and the remaining dinosaurs on Earth could not repopulate it. I'm not entirely sure what the mass extinction was from, but fossil records have shown this trend. Side: gradual die out then mass extinction
PBS has a pretty thorough explanation here: http://www.pbs.org/wgbh/evolution/ Side: gradual die out then mass extinction
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