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1 Noun 0 Verb 1 Adj. 0 Adv.
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ENArcheanNoun
EN
The time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life
Archean eonArchean aeon
bn:00005395n Named Entity
ENArcheanAdjective
EN
Of or relating to the earliest known rocks formed during the Precambrian Eon
archaean
bn:00097445a Concept

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