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Priabonian Stage
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Chart showing the Paleogene period of the Cenozoic era on the geologic time scale, listing its epochs-Oligocene, Eocene, and Paleocene-each divided into stages with corresponding ages in millions of years ago. A detailed geologic time scale chart displaying Earth's history from the Hadean Eon over 4.5 billion years ago to the present, organized by eons, eras, periods, epochs, and ages with color-coded columns and corresponding dates in millions of years.
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Chart showing the Paleogene period of the Cenozoic era on the geologic time scale, listing its epochs-Oligocene, Eocene, and Paleocene-each divided into stages with corresponding ages in millions of years ago.
Paleogene Period in geologic time The Paleogene Period and its subdivisions.

Priabonian Stage

stratigraphy
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History

Priabonian Stage, uppermost division of Eocene rocks, representing all rocks deposited worldwide during the Priabonian Age (38 million to 33.9 million years ago) of the Paleogene Period (66 million to 23 million years ago). The Priabonian Stage is named for Priabona in the Vicenza province of northern Italy. The lower boundary of the Priabonian Stage coincides with the first appearance of the calcareous nannoplankton (a single-celled, photosynthetic organism with a shell made up of calcium...

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