Paleogene

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Palaeogene The earlier of the two periods which comprise the Tertiary sub-Era, preceded by the Cretaceous, followed by the Neogene, and dated at 65–23.3 Ma ( Harland et al., 1989). The Palaeogene Period is subdivided into the Palaeocene, Eocene, and Oligocene Epochs.

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Palaeogene The period that comprises the first three epochs of the Tertiary Sub-Era: the Paleocene, Eocene, and Oligocene, preceded by the Cretaceous, followed by the Neogene, and dated at 65–23.3 Ma.

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Palaeogene The first period of the Cenozoic Era, 65.5–23.03 Ma ago, comprising the Palaeocene, Eocene, and Oligocene Epochs.

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