Neoproterozoic
25
Stratigraphy
Index
Index add'l
Type
Rank
Scope
Belongs to
Age (Ma)
Age
Base
Top
Tonian
NP1
chronostratigraphy
System
global
Neoproterozoic1000.0720.0
Cryogenian
NP2
chronostratigraphy
System
global
Neoproterozoic720.0635.0
Ediacaran
E
E
chronostratigraphy
System
global
Neoproterozoic635.0538.8
25
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