Lower Devonian
General info
Belongs to
Type chronostratigraphy
Rank Series
Scope global
Status formal standard
Age top (Ma) 393.3
Age base (Ma) 419.2
Age (Ma)
Index
D1
Alt. index
D1
Date changed 2022-11-04
StratigraphyIndexIndex add'lTypeRankScopeBelongs toAge base (Ma)Age top (Ma)Age
Lochkovian
d1
chronostratigraphy
Stage
global
Lower Devonian 419.2 410.8
Devonian
Pragian
d2
chronostratigraphy
Stage
global
Lower Devonian 410.8 407.6
Emsian
d3
chronostratigraphy
Stage
global
Lower Devonian 407.6 393.3