The Cretaceous (IPA: / k r ɪ ˈ t eɪ ʃ ə s / krih-TAY-shəss) [2] is a geological period that lasted from about 143.1 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, …
5 天之前 · The Cretaceous environment Paleogeography. The position of Earth’s landmasses changed significantly during the Cretaceous Period—not unexpected, given its long …