Feels like there was a lot more megafauna in prehistoric earth than there are today
In: 20
I estimate that back then, being large was an evolutionary advantage. As the world changed example less oxygenated air, oceans dividing the contents and land masses developing that were inherently bad for large animals. Mountains and caves being large factors. These creatures went from hunting in open plains to varied landscapes. So the giants died out, out hunted, and out lived.
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