Niuchehean age - Tremadoc epoch

International Chronostratigraphic TimescaleCambrian of ChinaOrdovician of Britain
OrdovicianLate OrdovicianHirnantianAshgillHirnantian443.1
KatianRawtheyan445.2
Cautleyan448.8
Pusgillian449.2
CaradocStreffordianOnnian †449.5
Cheneyan451.3
Burrellian452.5
Sandbian452.8
Actonian †453
Marshbrookian †Woolstonian †454
Longvillian †455
Aurelucian456.6
Soudleyan †/Harnagian/Costonian457.2
Middle OrdovicianDarriwilianLlanvirnLlandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn458.2
Abereiddian/Early Llanvirn461.1
ArenigFennian468
Dapingian469.4
Whitlandian470.7
Early OrdovicianFloian471.3
Moridunian473.8
TremadocianTremadocMigneintian477.1
Cressagian481.1 *
486.4 *
CambrianFurongianStage 10NiucheheanTaoyuanian †486.85
JiangshanianJiangshanian491
PaibianPaibian494.2
Waergangian †/Youshuanian495.2 *
MiaolingianGuzhangianGuzhangianWangcunian †497
DrumianDrumian500.5
WuliuanWuliuan/Taijangian504.5
Series 2Stage 4Duyunian506.5
Stage 3Nangaoian514.5
TerreneuvianStage 2Meishucunian521
Fortunian529
Jinnigian530.7
538.8