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This category has the following 6 subcategories, out of 6 total.
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345:Phanerozoic
341:Proterozoic
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260:Proterozoic
252:Precambrian
110:Pleistocene
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485:Categories
395:(6 C, 5 P)
288:Quaternary
236:Ordovician
182:Cretaceous
95:Quaternary
16:See also:
491:Volcanism
296:Paleogene
203:Paleozoic
170:Paleocene
156:Oligocene
151:Paleogene
41:Volcanism
329:Cambrian
319:Holocene
308:Pliocene
292:Cenozoic
284:Tertiary
243:Cambrian
229:Silurian
222:Devonian
196:Triassic
189:Jurassic
177:Mesozoic
137:Pliocene
129:Tertiary
103:Holocene
83:Cenozoic
337:Archean
312:Neogene
304:Miocene
300:Neogene
267:Archean
208:Permian
144:Miocene
88:Neogene
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66:Period
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470:(13 C)
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333:Hadean
274:Hadean
163:Eocene
69:Epoch
436:(7 C)
419:(4 C)
378:(7 C)
339:and
317:Pre-
306:and
286:and
63:Era
60:Eon
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404:V
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