from or referring to the period of time between around 144 and 65 million years ago, in which plants with flowers first appeared白垩纪的;来自白垩的(白垩纪为距今约1.44亿年至0.65亿年前的地质时期,有花植物首次出现)
the Cretaceous period白垩纪
See also: the Cretaceous
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