Lutetian
| 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 | ||||||||||||
| 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. It spans the time between 48.07 and 41.03 Ma. The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene Subepoch.