Rupelian

The Rupelian, in the geologic timescale, the older of two ages or the lower of two stages of the Oligocene Epoch/Series. It spans the time between 33.9 and 27.3 Ma. It is preceded by the Priabonian Stage and is followed by the Chattian Stage. The Rupelian is also known, informally, as the early Oligocene and lower Oligocene.

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