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You're saying that like humans (well, evolutionary predescesors) weren't around and evolving over that period as well.
by Keyframe 8y ago
You're saying that like humans (well, evolutionary predescesors) weren't around and evolving over that period as well.
- magduf 8y agoThey were, but mammals at that time were pretty simple and weren't doing that well against their dinosaur competitors. When the asteroid took out most of the dinosaurs, that's when mammalian life really took off, because they were able to survive the many years of lack of sunlight that ensued.