Read Edit View history 白垩系 bái'èxì Cretaceous System Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 白垩系/ 白堊系 bái'èxì Cretaceous System The sequence of rock layers formed during the Cretaceous Period, positioned between the Jurassic and Paleogene systems. Edit Delete References Add reference No references for this word.
白垩系/ 白堊系 bái'èxì Cretaceous System The sequence of rock layers formed during the Cretaceous Period, positioned between the Jurassic and Paleogene systems. Edit Delete