How come dinosaurs like the titanosaur grow to such large size, when animals like the elephant cant grow larger due to the square cube law?

Question

As far as i know, there arent bigger animals around today due to the square-cube law, and yet their were dinosaurs the size of whales on land?

In: 906

Answer 1

My understanding is that during the time that dinosaurs walked the earth, the amount of oxygen in the atmosphere was a lot higher when compared with the oxygen levels of today. The extra oxygen enabled animals to grow very large. I’m not entirely sure how or where I heard it, but I usually tend to think that’s the reason why.