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T-Rex problems (i.imgur.com)

submitted 10 months ago by [email protected] to c/[email protected]

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[–] [email protected] 13 points 10 months ago (1 children)

there is a reason why such giant creatures don't exist anymore.

Such giant creatures do exist. Larger ones even.

By far the most robust theory for the mass extinction event that wiped dinosaurs out is the asteroid theory. Not there being a sudden extreme change in oxygen levels lol.

[–] [email protected] 8 points 10 months ago (1 children)

I think people get confused because afaik the reason today's bugs may be smaller due to the lower oxygen levels.

Doesn't really apply to T-Rex tho.

[–] [email protected] 4 points 10 months ago

Which has to do with how bugs breath through their exoskeletons which is a function of surface area. Lots of O2 can support larger surfaces area bugs.