ෆැනෙරොසොයික

Phanerozoic
Fauna and flora from each of the twelve periods of the Phanerozoic. From top left: Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleogene, Neogene, and Quaternary species.
Chronology
Etymology
Name formality	Formal
Usage information
Celestial body	Earth
Regional usage	Global (ICS)
Time scale(s) used	ICS Time Scale
Definition
Chronological unit	Eon
Stratigraphic unit	Eonothem
First proposed by	George Halcott Chadwick, 1930
Time span formality	Formal
Lower boundary definition	Appearance of the Ichnofossil Treptichnus pedum
Lower boundary GSSP	Fortune Head section, Newfoundland, Canada 47.0762°N 55.8310°W / 47.0762; -55.8310
GSSP ratified	1992
Upper boundary definition	N/A
Upper boundary GSSP	N/A
GSSP ratified	N/A

ෆැනෙරොසොයික යුගය (ඉංග්‍රීසි:  Phanerozoic) යනු භූ විද්‍යාත්මක කාල පරිමාණයේ හතරවන සහ වත්මන් යුගය වේ.

භාහිර සබැඳි

• Phanerozoic (chronostratigraphy scale) සංරක්ෂණය කළ පිටපත 2022-01-08 at the Wayback Machine