Melbournian Australian Stage
From 428.2 +/- 2.3 To 416 +/- 2.8 Ma
Start Defined By: Imprecise. Between the base of acritarch biozone 5 and
extinction of conodont Pterospathodus amorphognathoides. May be near base
of Cyrtograptus centrifugus graptolite zone.
End Defined By: Graptolite, lowest occurrence of Monograptus uniformis.
Start Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
End Based On: Gradstein, Ogg, Smith, _A Geologic Time Scale 2004_
-- Overlaps With --
Epoch: Early Silurian (443.7 - 422.9)
Chinese Stage: Xiushanian (429 - 425.5)
North American Stage: Niagaran (438 - 421.3)
-- A Substage of --
Eon: Phanerozoic (542 - -5.5012e-005)
Era: Paleozoic (542 - 251)
Period: Silurian (443.7 - 416)
-- Preceeded By --
Sub-Epoch: Llandovery (443.7 - 428.2)
ICS Stage: Telychian (436 - 428.2)
Australian Stage: Eildonian (433 - 428.2)
-- Followed By --
Period: Devonian (416 - 359.2)
Epoch: Early Devonian (416 - 397.5)
ICS Stage: Lochkovian (416 - 411.2)
Chinese Stage: Lianhuashanian (416 - 413)
North American Stage: Ulsterian (416 - 391.8)
-- Contains the Following Epochs --
Epoch: Late Silurian (422.9 - 416)
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