>>21264129Don't care, golem. Your God, even if he exists, is a foreskin-obsessed, nigger-loving Jew faggot and deserves to be abolished. The white man doesn't need to be a slave to anyone, let alone such a vile deity.
>>21264135>>21264118No. Oxygen levels weren't that different. And, CO2 levels don't really impact organism size. (Oxygen levels would only really impact bug size anyways. Vertebrate breathing is far more efficient.)
Firstly, most non-Sauropod dinosaurs actually weren't that bigger than mammalian megafauna. Some prehistoric mammals actually grew larger than the largest non-Sauropod dinosaurs. Paraceratherium was basically larger than anything that wasn't a Sauropod.
Secondly, dinosaurs simply LOOK bigger due to having long tails. This artificially increases their height without significantly increasing mass.
So, for why dinosaurs generally do tend to go big especially Sauropods, dinosaurs have a bunch of adaptations that ironically were originally evolved for being excellent at being small agile creatures. Hollow bones. An Avian style respiratory system to get more air. These traits, however, also allowed dinosaurs to grow bigger. More efficient lungs allowed dinos to get more oxygen. Hollow bones allowed them to get larger in volume without being too massive. (Sauropods took those characteristics to the extreme.) Those traits also allowed birds to be great flyers. (And, Pterosaurs too actually, despite not being dinosaurs but instead closely related.)
The last factor is probably method of birth. Mammals give live birth. Dinosaurs lay eggs. This means that large mammals will have long gestation periods and thus can't reproduce as much as a large dinosaur. This puts an upper limit to land mammal size.
But of course, the largest animal we know of in all of life history is a mammal, the Blue Whale.
