被确认的欧洲最陈腐的蚂蚁化石是Gerontoformica cretacica,它存在于法国变成于白垩纪早期(Lower Cretaceous)的琥珀中,美白产品排行榜10强。时光没关系追溯到约1亿年前。
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lower cretaceous oils 后白垩纪石油
upper jurassic-lower cretaceous 上侏罗下白垩统
upper jurassic-lower cretaceous strata 上侏罗下白垩统
Lower Cretaceous Lakang Formation 下白垩统拉康组
lower-cretaceous 早白垩世
the lower cretaceous 下白垩统
lower cretaceous aquifer 下白垩统含水层
The facies types of the Lower Cretaceous are mainly delta, lake and turbidity.
下白垩统的扎赉诺尔群的沉积相的主要类型为三角洲相，湖相和浊流相。
Chagan depression is in the east of Yin 'gen basin, and lower cretaceous is major exploration stratum.
查干凹陷位于银根盆地东部，勘探主要目的层为下白垩统。
Based on the geological and geophysical data, this paper analyses characteristics and controls of high-frequency sequences of Lower Cretaceous Series in Wuerxun Depression.
利用地质、地球物理等资料对乌尔逊凹陷下白垩统高频层序特征及其控制因素进行了分析。
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