Paleozoic Era
(Primary)
From 542 +/- 0.3 To 251 +/- 0.4 Ma
Start Defined By: Trace fossil, lowest occurrence of Treptichnus (Phycodes)
pedum. Near base of negative carbon-isotope excursion.
End Defined By: Conodont, lowest occurrence of Hindeodus parvus; termination
of major negative carbon-isotope excursion. About 1 myr after peak of
Late Permian extinctions.
Start Based On: Amthor et. al., "Extinction of Cloudinia and Namacalathus at
the Precambrian-Cambrian boundary in Oman", _Geology_, v. 31, p. 431-434,
2003.
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
-- Preceeded By --
Time: Precambrian (4567.17 - 542)
Eon: Proterozoic (2500 - 542)
Era: Neoproterozoic (1000 - 542)
Period: Ediacaran (630 - 542)
Australian Stage: Adelaidean (1300 - 542)
Chinese Stage: Sinian (800 - 542)
General Stage: Vendian (650 - 542)
General Stage: Poundian (570 - 542)
North American Stage: Hadrynian (850 - 542)
South African Stage: Namibian (900 - 542)
-- Followed By --
Era: Mesozoic (251 - 65.5)
Period: Triassic (251 - 199.6)
Epoch: Early Triassic (251 - 245)
ICS Stage: Induan (251 - 249.7)
Regional Stage: Griesbachian (251 - 250.4)
-- Contains the Following Periods --
Period: Cambrian (542 - 488.3)
Period: Ordovician (488.3 - 443.7)
Period: Silurian (443.7 - 416)
Period: Devonian (416 - 359.2)
Period: Carboniferous (359.2 - 299)
Period: Permian (299 - 251)
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