cretaceous

Only in the tropics were numerous late Cretaceous groups extinguished during peaks in their evolution.

只是熱帶地區才有大批晚白堊紀生物類群正值其演化的極盛時期突然消亡.

辭典例句

The Cretaceous extinction was like a terrible streak of bad luck lasting millions of years.

白堊紀的生物絕滅,猶如一場持續千百萬年的可怕厄運.

辭典例句

The story takes place 6500 years ago in the Cretaceous period.

故事發生在6500萬年前的白堊紀晚期.

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So the researchers resorted to some techniques out of a Cretaceous CSI.

所以科學家只能借助于《犯罪現場調查:白堊紀篇》用到的技術.

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NEW EARLY CRETACEOUS LALACID FROM JINGXI BASIN OF BEIJING, CHINA ( HOMOPTERA: FULGOROIDEA )

北京京西盆地早白堊世同翅目化石一新屬 ( 同翅目: 蠟蟬總科)(英文 )

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From the view of stratigraphy, they all belong to the Cretaceous period.

從地層學上看, 它們都屬于白堊紀.

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Upper Cretaceous : Including the Sifangtai Formation — Minshui Formation, corresponding to the Cenonian — Maestrichtian.

四方臺組—明水組為白堊系上統, 相當于賽諾—梅斯特利克蒂階(Senonian—Maestrichtian).

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An image feet of live mainly in Jurassic and cretaceous.

蜥腳形類主要生活在侏羅紀和白堊紀.

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Mineral, palaeontology, middle devonian, permian to early jurassic, and cretaceous.

收藏礦物 、 古生物學 、 中泥盆紀 、 二疊紀到早期的侏羅紀和白惡紀.

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Xihu depression is a cretaceous - tertiary basin undergoing multi - episodic tectonism.

西湖凹陷是經歷多期構造作用的白堊 - 第三紀盆地.

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Chagan Depression is a rift subsidence basin, which has developed cretaceous hydrocarbon.

查干凹陷為一白堊紀斷陷湖盆, 發育白堊紀含油氣系統.

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Cretaceous sandstone and Eogene mudstone are the main reservoir and caprock.

油氣從油氣田東部注入,由東向西運移并差異聚集,依次形成凝析氣藏、帶油環凝析氣藏和揮發性油藏.

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The facies types of the Lower Cretaceous are mainly delta, lake and turbidity.

下白堊統的扎賚諾爾群的沉積相的主要類型為三角洲相, 湖相和濁流相.

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The prototype of Zhoukou Cretaceous basin should be of foredeep basin.

白堊紀周口盆地的盆地原型應是山前凹陷盆地.

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A NEW EARLY CRETACEOUS FAMILY FROM LIUPANSHAN , NINGXIA, CHINA ( INSECTA, TRICHOPTERA )

寧夏六盤山早白堊世一新科 ( 昆蟲綱, 毛翅目 )

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