That enabled animals to grow as large as they did, and it enabled massive pterosaurs like Quetzalcoatlus to exist. And even Quetzalcoatlus, which is much lighter and had much larger wings than T. rex, has been the subject of debate as to whether and to what extent it could fly. Both existed in the late Cretaceous period.
It wasn’t different enough that those chicken wings would let a 15,000 lb critter fly. It had more oxygen, which was helpful for letting critters get big (esp insects), but it wasnt physically thick.
The atmosphere was different then.
That enabled animals to grow as large as they did, and it enabled massive pterosaurs like Quetzalcoatlus to exist. And even Quetzalcoatlus, which is much lighter and had much larger wings than T. rex, has been the subject of debate as to whether and to what extent it could fly. Both existed in the late Cretaceous period.
It wasn’t different enough that those chicken wings would let a 15,000 lb critter fly. It had more oxygen, which was helpful for letting critters get big (esp insects), but it wasnt physically thick.