Paleoproterozoic

释义与例句

adj.
  1. 1.

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

    地质
name
  1. 1.

    The era from 2,500 Ma to 1,600 Ma, marked by a dramatic increase in atmospheric oxygen.

    地质

词源

From paleo- + Proterozoic.

来源：wiktionary