How big would an asteroid need to be in order to wipe out all land animals?
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Quoted By: >>13070100 >>13070561 >>13070589 >>13071128 >>13071607
I know Cretaceous asteroid was pretty big (10-15km), but that thing failed to wipe out the Dinosaurs. It's too small.
I need something that can kill off large mammals, birds and reptiles, but also small burrowing animals like rodents.
How big would this hypothetical rock need to be? 200km? 400km?
I need something that can kill off large mammals, birds and reptiles, but also small burrowing animals like rodents.
How big would this hypothetical rock need to be? 200km? 400km?
