Paleocene epoch
volume
British pronunciation/pˌeɪliːəʊsˈiːn ˈɛpɒk/
American pronunciation/pˌeɪliːoʊsˈiːn ˈɛpɑːk/

"paleocene epoch"的定义和意义

Paleocene epoch
01

from 63 million to 58 million years ago; appearance of birds and earliest mammals

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