How would the world be if dinosaurs still existed?

Most dinosaur species haven’t walked the Earth in about 65 million years, so the chances of finding DNA fragments that are robust enough to resurrect are slim. After all, if dinosaurs were alive today, their immune systems would probably be ill-equipped to handle our modern panoply of bacteria, fungi and viruses.

What if the asteroid missed the dinosaurs?

In this scenario, today’s world might be full of reptiles and short on mammals — including people. But even if the asteroid hadn’t hit, dinosaurs and other Cretaceous life forms might have become extinct anyway. Some dinosaur species had started to dwindle long before the asteroid’s impact.

What would have happened to the dinosaurs without the asteroid impact?

Without the catastrophic asteroid impact and removal of the dinosaurs from the scene, it is unlikely that the inconspicuous mammals would have ever evolved into the large and diverse animals that fill the world today. Without the asteroid strike, the dinosaurs probably would have continued evolving into new and varied forms as climates changed.

Is there evidence of an asteroid impact 65 million years ago?

So far there is no evidence of an asteroid impact at that time. The second greatest break is the one that we have discussed, 65 My ago, caused by an asteroid impact. Geologists have divided the eras into shorter intervals called Periods, such as the Jurassic Period, noted for its large dinosaurs.

What would happen if the Earth was hit by a meteor?

This would have killed some plants, disrupting the food chain. Later calculations (especially by Jay Melosh at the University of Arizona) indicated that for the first few hours after the impact, rocky debris would have fallen back into the high atmosphere, creating a storm of glowing fireballs in the sky.

What would have happened to the dinosaurs if they didn’t evolve?

Without the asteroid strike, the dinosaurs probably would have continued evolving into new and varied forms as climates changed. One evolutionary path might have led to a reptile with grasping hands and a large brain, filling the niche in which we humans have evolved.