Stratigraphy
721 results
StratigraphyIndexIndex add'lTypeRankScopeBelongs toAge base (Ma)Age top (Ma)Age
Precambrian
PC
chronostratigraphy
global
Global Chronostratigraphy 4567 538.8
Archean
AR
chronostratigraphy
Eonothem
global
Precambrian 4000 2500
Proterozoic
PR
chronostratigraphy
Eonothem
global
Precambrian 2500 538.8
Vendian
chronostratigraphy
System
regional
Ediacaran
Phanerozoic
PH
chronostratigraphy
Eonothem
global
Global Chronostratigraphy 538.8 0
Paleozoic
PZ
chronostratigraphy
Erathem
global
Phanerozoic 538.8 251.902
Cambrian
Є
Ca, Cm
chronostratigraphy
System
global
Paleozoic 538.8 485.4
Lower Cambrian (old nomenclature)
Є1
Ca1
chronostratigraphy
Series
global
Cambrian 542 521
Cambrian
Middle Cambrian (old nomenclature)
Є2
Ca2
chronostratigraphy
Series
global
Cambrian 521 510
Cambrian
Upper Cambrian (old nomenclature)
chronostratigraphy
Series
global
Cambrian 499 488.3
Cambrian
Ordovician
O
O
chronostratigraphy
System
global
Paleozoic 485.4 443.8
Paleozoic
Öland Series
chronostratigraphy
Series
regional
Baltic Ordovician 489.8 463.8
Ordovician
Pakerort Stage
AII
O1PK
chronostratigraphy
Stage
regional
Iru Subseries 489.8 486.2
Tremadocian
Varangu Stage
AIII
O1VR
chronostratigraphy
Stage
regional
Iru Subseries 486.2 483.4
Tremadocian
Latorp Superstage
BI
chronostratigraphy
Superstage
regional
Ontika Subseries 483.4 471.8
Ordovician
Volkhov Stage
BII
O2VL
chronostratigraphy
Stage
regional
Ontika Subseries 471.8 467.5
Middle Ordovician
Kunda Stage
BIII
O2KN
chronostratigraphy
Stage
regional
Ontika Subseries 467.5 463.8
Darriwilian
Viru Series
chronostratigraphy
Series
regional
Baltic Ordovician 463.8 452
Ordovician
Aseri Stage
CIa
O2AS
chronostratigraphy
Stage
regional
Purtse Subseries 463.8 463
Darriwilian
Lasnamägi Stage
CIb
O2LS
chronostratigraphy
Stage
regional
Purtse Subseries 463 462.6
Darriwilian
Uhaku Stage
CIc
O2UH
chronostratigraphy
Stage
regional
Purtse Subseries 462.6 460.9
Darriwilian
Kukruse Stage
CII
O3KK
chronostratigraphy
Stage
regional
Purtse Subseries 460.9 458.2
Sandbian
Haljala Stage
CIII/DI
O3HL
chronostratigraphy
Stage
regional
Kurna Subseries 458.2 456.2
Sandbian
Idavere Substage
CIII
chronostratigraphy
Substage
regional
Haljala Stage
Sandbian
Ojamaa
chronostratigraphy
regional
Idavere Substage
Sandbian