1. The first age in the Oligocene Epoch, preceded by the Priabonian (Late Eocene), followed by the Chattian, and dated at 35.4–29.3 Ma ( Harland et al., 1989).
2. The name of the corresponding European stage, which is roughly contemporaneous with the lower Zemorrian (N. America), most of the Whaingaroan (New Zealand), and the upper Aldingan and lower Janjukian (Australia).
"Rupelian." A Dictionary of Earth Sciences. . Encyclopedia.com. (January 22, 2019). https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rupelian
"Rupelian." A Dictionary of Earth Sciences. . Retrieved January 22, 2019 from Encyclopedia.com: https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/rupelian