Category:Ordovician sedimentary rocks in North America

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Temperate regions: North America · Europe · – Polar regions: – Other regions:

Countries of North America: Canada · Mexico · United States of America^‡
^‡: partly located in North America

Precambrian	Phanerozoic Eon
Preceded by Proterozoic Eon	Phanerozoic Eon
	Paleozoic Era						Mesozoic Era			Cenozoic Era
	Cambrian	Ordovician	Silurian	Devonian	Carboniferous	Permian	Triassic	Jurassic	Cretaceous	Paleogene	Neogene	4ry

Subcategories

This category has the following 3 subcategories, out of 3 total.

Ordovician sedimentary rocks in Canada (9 C)
Ordovician sedimentary rocks in the United States (14 C, 1 F)

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Ordovician sedimentary rocks in Mexico (1 C)

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