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The Priabonian is, in the ICS's geologic timescale, the latest age or the upper stage of the Eocene Epoch or Series. It spans the time between . The Priabonian is preceded by the Bartonian and is followed by the Rupelian, the lowest stage of the Oligocene. International Commission on Stratigraphy 2017
Priabona, an extinct of Pipunculidae family, is named after Priabonian, the age of deposits from which this insect is known.
The top of the Priabonian Stage (the base of the Rupelian Stage and Oligocene Series) is at the extinction of foram genus Hantkenina.
Sometimes local rock strata cannot be correlated in sufficient detail with the ICS timescale, and stratigraphers often use regional timescales as alternatives to the ICS timescale. The Priabonian overlaps for example the upper Johannian and lowers Aldingan stages of the timescale or the upper Nanzian and lower Refugian stages of the timescale. Other regional stages which are more or less coeval with the Priabonian include the Jacksonian of the southeastern US and Runangan of New Zealand.
In biostratigraphy, the Priabonian Stage is coeval with the Chadronian North American Land Mammal Age, the Headonian European Land Mammal Mega Zone (in more detail: with the Mammal Paleogene zones 17A through 20), parts of the Barrancan and Mustersan South American Land Mammal Ages and the Ulangochuian and Ergilian Asian Land Mammal Ages.
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