Category:Ordovician fossil bearing formations in the United States

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

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 91 subcategories, out of 91 total.

A

Al Rose Formation (2 C)
Amsterdam Formation (U.S. geology) (1 C, 1 F)
Antelope Valley Limestone (2 C, 7 F)
Arnheim Formation (3 C, 5 F)
Ashlock Formation (3 C, 12 F)

B

C

D

Decorah Formation (3 C, 6 F)
Deepkill Shale (1 C)
Denley Formation (1 F)
Dillsboro Formation (2 C, 1 F)
Drakes Formation (2 C, 1 F)
Dubuque Formation (1 C, 3 F)

E

Edinburgh Formation (U.S. geology) (2 C, 3 F)
El Paso Group (geology) (3 F)
Ely Springs Dolomite (1 C)

F

G

H

Harding Sandstone (1 C, 1 F)
Hermitage Formation (1 C)

J

Johnson Spring Formation (1 C)
Juab Limestone (1 C, 1 F)

K

L

M

N

O

P

Q

Queenston Formation (3 C, 9 F)

R

S

Saluda Formation (1 C, 1 F)
Selby Formation (1 F)
Sequatchie Formation (1 C)
Shakopee Formation (2 C, 2 F)
Stonehenge Formation (U.S. geology) (1 C, 2 F)
Stony Mountain Formation (1 C, 1 F)

T

Tanners Creek Formation (1 C)
Trenton Formation (5 C, 7 F)

U

Utica Formation (8 C, 8 F)

V

Valcour Formation (1 C, 1 F)

W

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