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ෆැනෙරොසොයික යුගය (ඉංග්රීසි: Phanerozoic) යනු භූ විද්යාත්මක කාල පරිමාණයේ හතරවන සහ වත්මන් යුගය වේ.
Phanerozoic | |||||||
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![]() 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 | |||||||
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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 | ||||||
GSSP ratified | 1992 | ||||||
Upper boundary definition | N/A | ||||||
Upper boundary GSSP | N/A | ||||||
GSSP ratified | N/A |
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