Paleogene
From Palaeos.org
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| - | The Paleogene is the first and much the longest [[period]] of the [[Cenozoic]] [[era]]. It sees a great radiation of [[theria]]n [[Mammalia|mammals]], who take over the niches vacated by the non-avian dinosaurs and the marine reptiles of the Mesozoic. It includes the [[Paleocene]], [[Eocene]], and [[ | + | The Paleogene is the first and much the longest [[period]] of the [[Cenozoic]] [[era]]. It sees a great radiation of [[theria]]n [[Mammalia|mammals]], who take over the niches vacated by the non-avian dinosaurs and the marine reptiles of the Mesozoic. It includes the [[Paleocene]], [[Eocene]], and [[Oligocene]] [[epoch]]es. During the Paleogene period minor contiental drift occured. |
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