Oligocene epoch 1
noundomain: time
Princeton WordNet [ver.3.1]
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EnglishDefinition
from 40 million to 25 million years ago; appearance of sabertoothed cats
Instance_Hypernym
epoch 3
noun
a unit of geological time that is a subdivision of a period and is itself divided into ages
Part_meronym
Tertiary 1
noun
from 63 million to 2 million years ago
Paleogene 1
noun
The Paleogene (also spelled Palaeogene or Palæogene; informally Lower Tertiary) is a geologic period that began 66 and ended 23.03 million years ago and comprises the first part of the Cenozoic Era.
Rupelian 1
noun
The Rupelian is, in the geologic timescale, the older of two ages or the lower of two stages of the Oligocene epoch/series.
EnglishPart_holonym
Tertiary 1
noun
from 63 million to 2 million years ago
Paleogene 1
noun
The Paleogene (also spelled Palaeogene or Palæogene; informally Lower Tertiary) is a geologic period that began 66 and ended 23.03 million years ago and comprises the first part of the Cenozoic Era.
Rupelian 1
noun
The Rupelian is, in the geologic timescale, the older of two ages or the lower of two stages of the Oligocene epoch/series.
