The Bartonian is, in the ICS`s geological timescale, a stage or age in the middle Eocene epoch or series. The Bartonian age spans the time between {ma|Bartonian|and} {ma|Priabonian|Ma}. It is preceded by the Lutetian and is followed by the Priabonian age. ==Stratigraphic definition== The Bartonian stage was introduced by Swiss stratigrapher Karl ....
Found on
http://en.wikipedia.org/wiki/Bartonian
A stage of the Eocene 42.1 - 38.6 Ma
Found on
https://www.encyclo.co.uk/local/20501
No exact match found.
