Lexicon
Intervals
Macrostrat
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Cisuralian
227
Type
Epoch
Age range
298.9–274.4
Ma
International Timescale
also
International Epochs
Paleozoic
Permian
Guadalupian
Roadian
Cisuralian
Kungurian
Artinskian
Sakmarian
Asselian
Carboniferous
Pennsylvanian
Gzhelian
Russian Epochs
Biarmian
Cisuralian
Late Pennsylvanian
300
299
298
297
296
295
294
293
292
291
290
289
288
287
286
285
284
283
282
281
280
279
278
277
276
275
274
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