bn:00031353n
Noun Concept
Categories: Geological eras, Geochronology, Units of geologic time by rank
EN
era  geological era  period  geologic era  Geological eras
EN
A major division of geological time; an era is usually divided into two or more periods WordNet 3.0
English:
geology
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EN
A major division of geological time; an era is usually divided into two or more periods WordNet 3.0 & Open English WordNet
An era, in geology, is a subdivision of geologic time that divides an eon into smaller units of time. Wikipedia
A subdivision of geologic time Wikipedia Disambiguation
Subdivision of geological time; shorter than an eon and longer than a period Wikidata
A length of time. OmegaWiki
A unit of time, smaller than eons and greater than periods. Wiktionary
Geology: unit of time. Wiktionary (translation)
WordNet 3.0 & Open English WordNet
Wikipedia
Wikidata
EN
era
Wiktionary
EN
era
OmegaWiki
EN
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