bn:15696795n
Noun Named Entity
Categories: Katian, Late Ordovician, Ordovician geochronology, Ordovician stubs
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Katian
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The Katian is the second stage of the Upper Ordovician. Wikipedia
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The Katian is the second stage of the Upper Ordovician. Wikipedia
Second age of the Late Ordovician epoch Wikidata
A subdivision of the Ordovician period. Wiktionary
Subdivision of the Ordovician period. Wiktionary (translation)
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