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Stratigraphy
Ludlow
Stratigraphy
Index
Index add'l
Type
Rank
Scope
Belongs to
Age (Ma)
Age
Base
Top
Gorstian
chronostratigraphy
Stage
global
Ludlow427.4425.6
Ludfordian
chronostratigraphy
Stage
global
Ludlow425.6423.0
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