orosirian
adj 1name 1
Definitions
adj
1
Of a geologic period within the Paleoproterozoic era from about 2050 to 1800 million years ago.
name
1
The Orosirian period.
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adj
Of a geologic period within the Paleoproterozoic era from about 2050 to 1800 million years ago.
name
The Orosirian period.