Abstract
The warmest global temperatures of the past 85 million years
occurred during a prolonged greenhouse episode known as the
Early Eocene Climatic Optimum (52–50 Ma). The Early Eocene Climatic
Optimum terminated with a long-term cooling trend that culminated
in continental-scale glaciation of Antarctica from 34 Ma
onward. Whereas early studies attributed the Eocene transition
from greenhouse
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