Jurassic
Jurassic යනු මීට වසර මිලියන 201-145 කට පෙර, එනම් Mesozoic යුගයේ දෙවන කාල පරිච්ඡේදය වේ.
Jurassic | |
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201.3 ± 0.2 – ~145.0 Ma | |
Chronology | |
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°29′02″N 11°31′50″E / 47.4839°N 11.5306°E |
GSSP ratified | 2010 |
Upper boundary definition | Not formally defined |
Upper boundary definition candidates |
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Upper boundary GSSP candidate section(s) | None |
සටහන්සංස්කරණය
මූලාශ්රසංස්කරණය
භාහිර සබැඳිසංස්කරණය
- Examples of Jurassic Fossils
- Jurassic (chronostratigraphy scale)
- Jurassic fossils in Harbury, Warwickshire
- Jurassic Microfossils: 65+ images of Foraminifera
- "Jurassic". Encyclopædia Britannica. 15 (11th ed.). 1911. With map and table.