Jurassic

Jurassic යනු මීට වසර මිලියන 201-145 කට පෙර, එනම් Mesozoic යුගයේ දෙවන කාල පරිච්ඡේදය වේ.

Jurassic
201.3 ± 0.2 – ~145.0 Ma PreЄ Є O S D C P T J K Pg N
Chronology
සැකිල්ල:Jurassic graphical timeline
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	Magnetic—base of Chron M18r Base of Calpionellid zone B FAD of ammonite Berriasella jacobi
Upper boundary GSSP candidate section(s)	None

සටහන්

භාහිර සබැඳි

• 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.