Oligocene epoch
volume
British pronunciation/ˈɒlɪɡˌəʊsiːn ˈɛpɒk/
American pronunciation/ˈɑːlɪɡˌoʊsiːn ˈɛpɑːk/

"oligocene epoch"的定义和意义

Oligocene epoch
01

from 40 million to 25 million years ago; appearance of sabertoothed cats

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