Category:Geologic formations of the United States by geochronology

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

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Geologic time scale

Subcategories

This category has the following 37 subcategories, out of 37 total.

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Fossil bearing geologic formations in the United States by geochronology (27 C)

A

Archean formations in the United States (5 C)

C

Cambrian formations in the United States (23 C, 1 F)
Carboniferous formations in the United States (8 C)
Cenozoic formations in the United States (8 C)
Cretaceous formations in the United States (25 C, 1 F)

D

Devonian formations in the United States (26 C, 3 F)
Dewey Lake Formation (1 F)

E

Ediacaran formations in the United States (5 C)
Eocene formations in the United States (5 C)

H

Holocene formations in the United States (3 C)

J

Jurassic formations in the United States (13 C, 1 F)

M

Mesozoic formations in the United States (7 C)
Mesoarchean formations in the United States (1 C)
Mesoproterozoic formations in the United States (2 C)
Miocene formations in the United States (6 C, 1 F)

N

O

Oligocene formations in the United States (2 C)
Ordovician formations in the United States (18 C)

Q

Quaternary formations in the United States (5 C)

S

Silurian formations in the United States (7 C)

T

Triassic formations in the United States (18 C, 1 F)

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