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6 500万年前,地球曾经被恐龙统治过。然而英国科学家宣称,史前地球也曾经被一群叫做“水龙兽”的动物主宰过。
Earth was once ruled by dinosaurs 65 million years ago. However, British scientists claimed that prehistoric earth was also dominated by a group of animals called “water dragon animals.”