Meaning & use
Paleogene
A geologic period lasting from about 66 to 23 million years ago, following the extinction of the dinosaurs.
See it in a sentence
Early primates and the ancestors of modern mammals diversified during the Paleogene.
Fossils from the Paleogene show how mammals grew larger after the dinosaurs disappeared.
A note on using this word
The Paleogene is divided into the Paleocene, Eocene, and Oligocene epochs and is part of the larger Cenozoic era.
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