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bn:00031353n
Noun Concept
Categories: Geochronology, Geological eras, 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
Definitions
Relations
Sources
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)
IS A
geological time
geochronological unit
HAS PART
period
NL
sub-era
PART OF
eon
HAS INSTANCE
Cenozoic
Mesozoic
Paleozoic
Mesoarchean
Paleoarchean
+8 relations
DESCRIBED BY SOURCE
Brockhaus and Efron Encyclopedic Dictionary
Armenian Soviet Encyclopedia
DIFFERENT FROM
erathem
WordNet 3.0 & Open English WordNet
EN
era, geological era
Wikipedia
EN
era (geology)
Wikidata
EN
era
Wiktionary
EN
era
OmegaWiki
EN
period
Wikipedia Redirections
EN
geologic era, geological era, Geological eras
Wikidata Alias
EN
geological era

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