Anisian
In the geologic timescale, the Anisian is the lower stage or earliest age of the Middle Triassic series or epoch and lasted from 247.2 million years ago until 242 million years ago. The Anisian Age succeeds the Olenekian Age (part of the Lower Triassic Epoch) and precedes the Ladinian Age.
Anisian | |||||||||||||||||||||||
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The Muschelkalk in Europe is mainly Anisian aged | |||||||||||||||||||||||
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Etymology | |||||||||||||||||||||||
Name formality | Formal | ||||||||||||||||||||||
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Celestial body | Earth | ||||||||||||||||||||||
Regional usage | Global (ICS) | ||||||||||||||||||||||
Time scale(s) used | ICS Time Scale | ||||||||||||||||||||||
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Chronological unit | Age | ||||||||||||||||||||||
Stratigraphic unit | Stage | ||||||||||||||||||||||
Time span formality | Formal | ||||||||||||||||||||||
Lower boundary definition | Not formally defined | ||||||||||||||||||||||
Lower boundary definition candidates |
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Lower boundary GSSP candidate section(s) |
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Upper boundary definition | FAD of the Ammonite Eoprotrachyceras curionii | ||||||||||||||||||||||
Upper boundary GSSP | Bagolino, Lombardian pre-Alps, Italy 45.8193°N 10.4710°E | ||||||||||||||||||||||
Upper GSSP ratified | 2005 |
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