最終更新日：2024/07/28

(geology) Of a geologic era within the Proterozoic eon from 2,500 to 1,600 million years ago.

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Paleoproterozoic

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Paleoproterozoic

adj

(geology) Of a geologic era within the Proterozoic eon from 2,500 to 1,600 million years ago.

The Paleoproterozoic era is known for its diverse and abundant fossil record.

意味（1）

(geology) Of a geologic era within the Proterozoic eon from 2,500 to 1,600 million years ago.