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Earth May Have Had Rings Like Saturn 466 Million Years AgoBack when the Earth was crawling with trilobites ... the Ordovician period—which ran between 485.4 million years and 443.8 million years ago—including the positions of 21 impact craters ...
The study suggests the Zanclean Megaflood ended the Messinian Salinity Crisis, which lasted between 5.97 and 5.33 million years ago. A new study ... known floods in Earth's history," said Dr ...
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