1.. The final age in the Eocene Epoch, preceded by the Bartonian, followed by the Rupelian (Stampian), and dated at 38.6–35.4 Ma ( Harland et al., 1989).
2. The name of the corresponding European stage, which is roughly contemporaneous with the Refugian (N. America), Runangan (New Zealand), and part of the Aldingan (Australia).
"Priabonian." A Dictionary of Earth Sciences. . Encyclopedia.com. (April 20, 2019). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/priabonian
"Priabonian." A Dictionary of Earth Sciences. . Retrieved April 20, 2019 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/priabonian