cretaceous
adj. 白堊的,白堊紀的
n. 白堊紀,白堊系
1. abounding in chalk
2. of or relating to the Cretaceous geologic era;
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.
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.
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.
So the researchers resorted to some techniques out of a Cretaceous CSI.
所以科學家只能藉助於《犯罪現場調查:白堊紀篇》用到的技術.
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 )