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Definition of Hesperian epoch
1. Noun. The second of the three Martian geologic epochs, approximately from 3,500 million years ago to 1,800 million years ago, marked by lava flows, preceded by the Noachian epoch, and followed by the Amazonian epoch. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Hesperian Epoch
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