Priabonian
Geologic period
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 37.71 and 33.9 Ma. The Priabonian is preceded by the Bartonian and is followed by the Rupelian, the... Wikipedia
Occurred: 37.8 million years ago - 33.9 million years ago
Epoch: Eocene
Lower boundary definition: LAD of the large acarininids and the Foraminiferan Morozovelloides crassatus
Lower boundary GSSP: Alano section, Piave river, Venetian Prealps, Belluno, Italy; 45°54′51″N 11°55′05″E / 45.9141°N 11.9180°E
Upper boundary definition: LAD of Planktonic Foraminifers Hantkenina and Cribrohantkenina
Upper GSSP ratified: 1992