Nemakit-Daldynian Russian-Kazakhian Stage
From 542 +/- 0.3 To 534 Ma
Start Defined By: Trace fossil, lowest occurrence of Treptichnus (Phycodes)
pedum. Near base of negative carbon-isotope excursion.
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 and Ogg, "A Phanerozoic time scale", _Episodes_,
v.19, no.1&2., 1996.
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Cambrian (542 - 488.3)
Epoch: Early Cambrian (542 - 513)
Chinese Stage: Meishuchuan (542 - 532)
-- 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 --
Russian-Kazakhian Stage: Tommotian (534 - 530)
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