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{{Augenda|2020|04|29}}
'''Aeon''' geologicus, chronostratigraphice [[aeonothema]], est una hierarchia [[aevum geologicum|aevorum geochronologicorum]], qui subhierarchia est [[aera (geologia)|aera]]. geologice [[aetas planetae telluris|historia Telluris]] in quattuor aeones impartitur: [[Hadaicum]], [[Archaicum]], [[Proterozoicum]], [[Phanerozoicum]].
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