| 词汇 | cretaceous |
| 释义 | Cretaceous adjective geology specializeduk /krɪˈteɪ.ʃəs/ us /krɪˈteɪ.ʃəs/ 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 Cretaceous rocks白垩纪时期的岩石 Sponges are often preserved inside flints, which were originally deposited as hard layers within the Cretaceous chalk. It thrived in the late Cretaceous period only a few million years before all the dinosaurs on Earth became extinct. There was an abundance of ammonites, considered index organisms of the uppermost Cretaceous environment. The volcanoes in question may have erupted too early to account for the Cretaceous warming. Geology - general words Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene Permian petrographic petrographically petrography petrological Precambrian rockfall syncline You can also find related words, phrases, and synonyms in the topics: Prehistory Specific periods of time Cretaceous noun[ S ] geology specializeduk /krɪˈteɪ.ʃəs/ us /krɪˈteɪ.ʃəs/ the Cretaceous the period between around 144 and 65 million years ago, in which plants with flowers first appeared: In the Cretaceous, beetles and flies were the first pollinators. Fossil remains from the Cretaceous are almost always found in sedimentary deposits. The Cretaceous was the last of the Mesozoic periods and had the most dramatic and varied life forms.白垩纪是中生代的最后一个时期，有最为特別和多样的生命形式。 The researchers concluded that the dinosaurs were doing well at the end of the Cretaceous. Widespread volcanic eruptions swept India at the end of the Cretaceous. Geology - general words Anthropocene anticline apophysis auriferous biozone carboniferous continental plate geologically geomorphic gully erosion henge Holocene Permian petrographic petrographically petrography petrological Precambrian rockfall syncline You can also find related words, phrases, and synonyms in the topics: Prehistory Specific periods of time |
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