Time since the emergence of earliest fish

Time since the emergence of earliest fish (530 million y)

/fact/time-since-the-emergence-of-earliest-fish

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If Time since the emergence of earliest fish (530 million y) was a standard unit ...

Time since the emergence of multicellular life (2.1 billion y)...more would be 4 x Time since the emergence of earliest fish
Age of earliest stone hand axe (2.6 million y)...more would be 1/200 of Time since the emergence of earliest fish