太平洋海洋记录识别出早渐新世冰量的阶梯式增加；汉普郡盆地哺乳动物记录则区分了区域更替、约 35 万年的沉积间断以及其后亚洲迁入类群的首次记录。两类证据相互补充，但不能证明一条简单的单因果链。
claim:event:eocene-oligocene-transition图谱首页 / 参考文献 / Rapid stepwise onset of Antarctic glaciation and deeper calcite compensation in the Pacific Ocean
参考文献 / paperRapid stepwise onset of Antarctic glaciation and deeper calcite compensation in the Pacific Ocean
Coxall, H.K.; Wilson, P.A.; Pälike, H.; Lear, C.H.; Backman, J.
年份2005
来源角色primary-study
DOI / ID10.1038/nature03135
适用范围
event-mechanism · geochronology
Primary Pacific benthic-foraminiferal and carbonate record resolving two steps in earliest Oligocene ice growth; it does not by itself explain terrestrial mammal turnover.