Proterozoic eon 1
noundomain: time
Princeton WordNet [ver.3.1]
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EnglishDefinition
from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms
Instance_Hypernym
eon 1
noun
the longest division of geological time
Part_meronym
Precambrian 1
noun
the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
The Paleoproterozoic (also spelled Palaeoproterozoic) is the first of the three eras of the Proterozoic occurring between 2,500 to 1,600 million years ago.
The Mesoproterozoic is a geologic era that occurred from 1,600 to 1,000 million years ago.
Neoproterozoic 1
noun
The Neoproterozoic is the unit of geologic time from 1,000 to 541 million years ago.
EnglishPart_holonym
Precambrian 1
noun
the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
The Mesoproterozoic is a geologic era that occurred from 1,600 to 1,000 million years ago.
Neoproterozoic 1
noun
The Neoproterozoic is the unit of geologic time from 1,000 to 541 million years ago.
