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Information × Registration Number 2107U000649, Article popup.category Thesis Title popup.author popup.publication 01-01-2007 popup.source_user Сумський державний університет popup.source http://essuir.sumdu.edu.ua/handle/123456789/17567 popup.publisher Вид-во СумДУ Description Massive extinctions have occurred five times during the earth's history, the last one was the extinction of the dinosaurs, 65 million years ago. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/17567 popup.nrat_date 2025-05-12 Close