Geocollections

Stratigraphy

Lower Cambrian (old nomenclature)

Belongs to	Cambrian
Type	chronostratigraphy
Rank	Series
Scope	global
Status	formal standard
Age top (Ma)	521
Age base (Ma)	542
Age (Ma)	Cambrian
Index	Є₁
Alt. index	Ca₁
Date changed	2014-11-28

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