| Library / English Dictionary |
TERTIARY PERIOD
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
From 63 million to 2 million years ago
Synonyms:
Tertiary; Tertiary period
Classified under:
Nouns denoting time and temporal relations
Instance hypernyms:
geological period; period (a unit of geological time during which a system of rocks formed)
Meronyms (parts of "Tertiary period"):
Pliocene; Pliocene epoch (from 13 million to 2 million years ago; growth of mountains; cooling of climate; more and larger mammals)
Miocene; Miocene epoch (from 25 million to 13 million years ago; appearance of grazing mammals)
Oligocene; Oligocene epoch (from 40 million to 25 million years ago; appearance of sabertoothed cats)
Eocene; Eocene epoch (from 58 million to 40 million years ago; presence of modern mammals)
Paleocene; Paleocene epoch (from 63 million to 58 million years ago; appearance of birds and earliest mammals)
Holonyms ("Tertiary period" is a part of...):
Age of Mammals; Cenozoic; Cenozoic era (approximately the last 63 million years)
