Praghian ICS Stage
(Siegenian)
From 411.2 +/- 2.8 To 407 +/- 2.8 Ma
Start Defined By: Conodont, lowest occurrence of Eognathodus sulcatus.
End Defined By: Conodont, lowest occurrence of Polygnathus kitabicus (= Po.
dehiscens).
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
Global Stratotype Section and Point: Velká Chuchle quarry, southwest part of
Prague city, Czech Republic
-- Overlaps With --
Chinese Stage: Nagaolingian (413 - 410)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Devonian (416 - 359.2)
Epoch: Early Devonian (416 - 397.5)
North American Stage: Ulsterian (416 - 391.8)
-- Preceeded By --
ICS Stage: Lochkovian (416 - 411.2)
-- Followed By --
ICS Stage: Emsian (407 - 397.5)
-- Contains the Following Stages --
Chinese Stage: Yujianian (410 - 407)
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