Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The
earliest of theMartian geologic epochs, approximately from 3,800 million years ago to 3,500 million years ago, marked by many largeimpact craters and followed by theHesperian epoch .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named for Noachis Terra.
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