Late Cambrian Epoch
(Upper Cambrian, Merioneth, Furongian, Croixian, Potsdamian)
From 501 +/- 2 To 488.3 +/- 1.7 Ma
Start Defined By: Trilobite, lowest occurrence of agnostoid Glyptagnostus
reticulatus. Coincides with base of large positive carbon-isotope
excursion.
End Defined By: Conodont, lowest occurrence of Iapetognathus fluctivagus;
just above base of Cordylodus lindstromi conodont Zone. Just below lowest
occurrence of planktonic graptolites.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
North American Stage: Marjuman (504 - 494.5)
North American Stage: Ibexian (491 - 471.8)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Cambrian (542 - 488.3)
-- Preceeded By --
Epoch: Middle Cambrian (513 - 501)
Australian Stage: Boomerangian (504 - 501)
Chinese Stage: Zhungxian (505 - 501)
Russian-Kazakhian Stage: Mayan (502 - 501)
-- Followed By --
Period: Ordovician (488.3 - 443.7)
Epoch: Early Ordovician (488.3 - 471.8)
ICS Stage: Tremadocian (488.3 - 478.6)
Australian Stage: Datsonian (488.3 - 485)
European Stage: Cressagian (488.3 - 486)
-- Contains the Following Stages --
ICS Stage: Paibian (501 - 496)
Australian Stage: Payntonian (491 - 488.3)
Australian Stage: Mindyallan (501 - 497)
Australian Stage: Idamean (497 - 494)
North American Stage: Steptoan (494.5 - 493)
North American Stage: Sunwaptan (493 - 491)
Regional Stage: Maentwrogian (501 - 496.8)
Regional Stage: Festiniogian (496.8 - 492.5)
Regional Stage: Dolgellian (492.5 - 488.3)
Russian-Kazakhian Stage: Ayusokkanian (501 - 494.5)
Russian-Kazakhian Stage: Sakian (494.5 - 493)
Russian-Kazakhian Stage: Aksayan (493 - 491.5)
Russian-Kazakhian Stage: Batyrbayan (491.5 - 488.3)
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