Category:Siderian

**Siderian**
	first period of the Paleoproterozoic Era
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Instance of	period; system;
Part of	Paleoproterozoic (1); ICS Standard Global Chronostratigraphic (Geochronologic) Scale (period);
Named after	iron;
Start time	c. 2,501st millennium BC;
End time	c. 2,301st millennium BC;
Followed by	Rhyacian;
Partially coincident with	Oxygenian;
Authority file
	Q870498; BabelNet ID: 01494664n
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Precambrian											Phanerozoic
Archean	Proterozoic Eon
Neoarchean	Paleoproterozoic				Mesoproterozoic			Neoproterozoic			Paleozoic
Neoarchean	Siderian	Rhyacian	Orosirian	Statherian	Calymmian	Ectasian	Stenian	Tonian	Cryogenian	Ediacaran	Cambrian

British English: The following category lists files and subcategories depicting, involving, or related to the Siderian Period, the first period of the Palaeoproterozoic Era, which spans from around 2.5 to 2.3 billion years ago.

English: The following category lists files and subcategories depicting, involving, or related to the Siderian Period, the first period of the Paleoproterozoic Era, which spans from around 2.5 to 2.3 billion years ago.

Subcategories

This category has only the following subcategory.

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Siderian palaeogeography (4 F)