The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 million years ago (mya), to the beginning of the Devonian Period, about 416.0 ± 2.8 mya. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by several million years. The Base of the Silurian is set at a major extinction event when 60% of marine species were wiped out.
Base of Devonian
Ludlow Epoch
Paleozoic Era
Силур
Wenlock Epoch
Silúrcio
Gorstian Age
Sheinwoodian Age
Geologic Time Scale (2019)
Llandovery Epoch
シルル紀
Hirnantian Age
Ordovician Period
Rhuddanian Age
Phanerozoic Eon
a1.1.3.4
Early Devonian Epoch
Sylur
Silurian Period
Silúrico
Siluur
Silūras
younger bound -419.2 +|-3.2 Ma
Late Ordovician Epoch
Silur
Silur
Silur
Silur
Silur
Silurien
Ludfordian Age
Devonian Period
Siluuri
Base of Silurian
silur
silur
older bound -443.8 +|-1.5 Ma
Homerian Age
Lochkovian Age
siluriano
志留纪
szilur
Pridoli Epoch
silúr
Silurian
Aeronian Age
Telychian Age