Eocene Oligocene始新统
late eocene晚始新世
middle eocene始新世;中始新世
upper eocene上始新统
eocene flora始新世植物群
Eocene epoch始新世
Eocene era始新世
Through integration analyse the periphery and inner Bohu sag uplift-chilling age of the basin, we confirmed the time limit of tectonic uplift-chilling event is 3762Ma（Eocene to Paleocene）.
通过对盆地内部博湖南北坳陷抬升-冷却年龄的综合分析,确定盆地内部构造抬升-冷却事件的时限为37～62Ma(始新世到古新世)。
Dongying depression Upper part of middle Eocene series and upper Eocene series sequence strati-graphic model oil and gas accumulation
东营凹陷中始新统上部-上始新统层序地层模式油气聚集。
参考来源 - 东营凹陷中始新统上部According to the characteristics of palynofloras and compare other similar palynofloras, the geological age of the first and second assemblage is late Eocene to early Oligocene.
根据孢粉植物群特征，对比其它相似孢粉组合，山羊沟一、二孢粉组合地质时代接近于晚始新世——早渐新世。
参考来源 - 东北华北地区古近纪中晚期孢粉植物群及其古植被和古气候研究ADJ（形容词） of, denoting, or formed in the second epoch of the Tertiary period, which lasted for 20000000 years, during which hooved mammals appeared 始新世的
N（名词） the Eocene epoch or rock series 始新世