eocene oligocene epoch 始新世渐新世
Eocene Oligocene 始新统
Eocene-Oligocene boundary global cooling event 始新统
eocene to oligocene 始新世渐新世
eocene-early oligocene 始新世渐新世
late eocene-early oligocene 晚始新世早渐新世
late eocene and oligocene 晚始新世至渐新世
The oil shale mainly occurs in the Eocene-Oligocene Youganwo Formation.
油页岩主要赋存于始新渐新统油柑窝组。
Quercoidites - Saliaxipollenites- Fraxinoipollenits assemblage, which may belong to Late Eocene-Early Oligocene.
栎粉属-柳粉属-粉属组合，属晚始新世-早渐新世。
The massive changes of the kinematic pattern occurred roughly between the Eocene and Oligocene epochs, which is in accordance with the great reorganization in global kinematics and dynamics.
运动学模式发生巨大转变的时期，大致在始新世与渐新世之间，这与全球运动学和动力学发生的重大改组的时间相一致。
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