Lexicon
Intervals
Macrostrat
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Chemungian
150
Type
Age
Age range
379–372.15
Ma
International Timescale
Late Devonian
Famennian
Frasnian
COSUNA
Cassadagan
Chemungian
Fingerlakesian
379
379
378
378
377
377
376
376
375
375
374
374
373
373
372
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