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Q&A What would be a reasonable amount of time needed for some arthropod to evolve into megafauna, given the right evolutionary pressures?

Roughly how long would arthropods have to evolve before they could reach sizes analogous to current day megafauna (like today's mammals)? Assume an alternate earth where tetrapods never colonize...

2 answers  ·  posted 7y ago by Fred the John‭  ·  last activity 7y ago by Fred the John‭

Question biology insectoid evolution fauna