Sakmarian | |||||||||||||
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Chronology | |||||||||||||
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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 Conodont Mesogondolella monstra | ||||||||||||
Lower boundary GSSP | Usolka section, Southern Ural Mountains, Russia 53°55′29″N 56°43′43″E / 53.9247°N 56.7287°E | ||||||||||||
Lower GSSP ratified | 2018[2] | ||||||||||||
Upper boundary definition | FAD of the Conodont Sweetognathus whitei | ||||||||||||
Upper boundary GSSP | Dalny Tulkas section, Southern Ural Mountains, Russia 53°55′29″N 56°30′58″E / 53.9247°N 56.51615°E | ||||||||||||
Upper GSSP ratified | February 2022[3] |
In the geologic timescale, the Sakmarian is an age or stage of the Permian period. It is a subdivision of the Cisuralian Epoch or Series. The Sakmarian lasted between 293.52 and 290.1 million years ago (Ma). It was preceded by the Asselian and followed by the Artinskian.[4]