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bn:00031353n
Noun Concept
SYL
No term available
EN
A major division of geological time; an era is usually divided into two or more periods WordNet 3.0
English:
geology
Relations
Sources
IS A
EN
geological time
EN
geochronological unit
HAS PART
EN
period
NL
sub-era
PART OF
EN
eon
HAS INSTANCE
EN
Cenozoic
EN
Mesozoic
EN
Paleozoic
EN
Mesoarchean
EN
Paleoarchean
+8 relations
DESCRIBED BY SOURCE
EN
Brockhaus and Efron Encyclopedic Dictionary
EN
Armenian Soviet Encyclopedia
DIFFERENT FROM
EN
erathem

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