Lutetian | |||||||||||||
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Chronology | |||||||||||||
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Formerly part of | Tertiary Period/System | ||||||||||||
Etymology | |||||||||||||
Name formality | Formal | ||||||||||||
Usage information | |||||||||||||
Celestial body | Earth | ||||||||||||
Regional usage | Global (ICS) | ||||||||||||
Time scale(s) used | ICS Time Scale | ||||||||||||
Definition | |||||||||||||
Chronological unit | Age | ||||||||||||
Stratigraphic unit | Stage | ||||||||||||
Time span formality | Formal | ||||||||||||
Lower boundary definition | FAD of the calcareous nannofossil Blackites inflatus | ||||||||||||
Lower boundary GSSP | Gorrondatxe section, Western Pyrenees, Basque Country, Spain 43°22′47″N 3°00′51″W / 43.3796°N 3.0143°W | ||||||||||||
Lower GSSP ratified | April 2011[3] | ||||||||||||
Upper boundary definition | Not formally defined | ||||||||||||
Upper boundary definition candidates | Calcareous nannofossil near LAD of the Haptophyte Reticulofenestra reticulata | ||||||||||||
Upper boundary GSSP candidate section(s) | Contessa highway section, Gubbio, Central Apennines, Italy |
The Lutetian is, in the geologic timescale, a stage or age in the Eocene.[4] It spans the time between 47.8 and 41.2 Ma. The Lutetian is preceded by the Ypresian and is followed by the Bartonian.[5] Together with the Bartonian it is sometimes referred to as the Middle Eocene Subepoch.