ෆැනෙරොසොයික

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

Phanerozoic

538.8 ± 0.2 – 0 Ma

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

−550 —

–

−500 —

–

−450 —

–

−400 —

–

−350 —

–

−300 —

–

−250 —

–

−200 —

–

−150 —

–

−100 —

–

−50 —

–

0 —

♇

P
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o
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Neoproterozoic

P
a
l
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M
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C
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↓ Quaternary

Neogene

538.8

485.4

443.8

419.2

358.9

298.9

251.902

201.3

145

66

2.58

23.03

(million years ago)

Eras & periods of the Phanerozoic

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°04′34″N 55°49′52″W / 47.0762°N 55.8310°W

GSSP ratified

1992

Upper boundary definition

N/A

Upper boundary GSSP

N/A

GSSP ratified

N/A