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This category has the following 8 subcategories, out of 8 total.
220:
The following 10 pages are in this category, out of 10 total.
325:
137:Oligocene paleontological sites of North America
217:Pages in category "Oligocene North America"
222:This list may not reflect recent changes
326:
344:Geologic formations of North America
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157:Oligocene Series of North America
93:Oligocene life of North America
22:Category:Miocene North America
1:
18:Category:Eocene North America
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276:Marysvale volcanic field
334:Paleogene North America
310:San Juan volcanic field
293:Pemberton Volcanic Belt
240:Cypress Hills Formation
181:Oligocene United States
16:See also the preceding
235:Canadian Cascade Arc
298:Pilot Rock (Oregon)
69:Oligocene Caribbean
20:and the succeeding
264:John Day Formation
252:La Garita Caldera
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288:Paleo-Bell River
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328:Categories
185:(1 C, 1 P)
141:(2 C, 3 P)
97:(2 C, 4 P)
45:Arikareean
339:Oligocene
201:Whitneyan
315:Shiprock
113:Orellan
161:(17 P)
49:(13 P)
205:(7 P)
117:(2 P)
73:(1 C)
330::
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305:S
283:P
271:M
259:J
247:G
230:C
194:W
170:U
150:S
126:P
106:O
82:L
58:C
38:A
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