Jurassic
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Jurassic යනු මීට වසර මිලියන 201-145 කට පෙර, එනම් Mesozoic යුගයේ දෙවන කාල පරිච්ඡේදය වේ.
Quick Facts Chronology, Etymology ...
Jurassic | |||||||||
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201.3 ± 0.2 – ~145.0 Ma | |||||||||
Chronology | |||||||||
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Etymology | |||||||||
Name formality | Formal | ||||||||
Usage information | |||||||||
Regional usage | Global (ICS) | ||||||||
Time scale(s) used | ICS Time Scale | ||||||||
Definition | |||||||||
Chronological unit | Period | ||||||||
Stratigraphic unit | System | ||||||||
Time span formality | Formal | ||||||||
Lower boundary definition | First appearance of the ammonite Psiloceras spelae tirolicum. | ||||||||
Lower boundary GSSP | Kuhjoch section, Karwendel mountains, Northern Calcareous Alps, Austria 47.4839°N 11.5306°E / 47.4839; 11.5306 | ||||||||
GSSP ratified | 2010 | ||||||||
Upper boundary definition | Not formally defined | ||||||||
Upper boundary definition candidates |
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Upper boundary GSSP candidate section(s) | None |
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