References / 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.
Year2005
Source roleprimary-study
DOI / ID10.1038/nature03135
Fitness and scope
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.
Claim ledger
event-mechanism · highPacific marine records resolve stepwise earliest Oligocene ice growth, while the Hampshire Basin mammal record separates regional turnover, a roughly 350 kyr hiatus and later Asian immigrant appearances; the records are complementary, not proof of one simple causal chain.
claim:event:eocene-oligocene-transition