If humans lived in the age of dinosaurs, what dinosaurs were the most lethal to humans?

Tyrannosaurus rex, pterosaur, etc. Because Tyrannosaurus rex has the strongest attack power, and pterosaurs can fly and are fast, they are the most lethal to humans.

Tyrannosaurus rex, because of its huge size and ferocity, is the most threatening dinosaur.

Large carnivorous dinosaursIt is the most lethal to humans. For example, Tyrannosaurus rex, Yongchuan dragon, ice ridge dragon, Allosaurus, they are all huge, and unarmed humans can't take these behemoths; In addition, they feed on meat, and humans become their direct targets.

Personally, I don't think the premise of this question is valid, because if dinosaurs existed, humans could not exist, and human proper dinosaurs did not appear until many hundreds of millions of years after they became extinct. All carnivorous dinosaurs were deadly to humans.

When humans first appeared, it was in the Cretaceous period!

At that time, humans were still very tall, usually about 3 meters, and some could even climb up to 5 meters with Tyrannosaurus rex.

Don't look at humans are quite tall, run? Can't outrun Tyrannosaurus rex, dinosaur, fight? Human strength is very small, Tyrannosaurus rex can shoot humans into meat paste with one tail, fortunately they are not fighting with dinosaurs with their bare hands, but using nature's advantages to their own dinosaurs Zhou Xuan, for example, take stones, trees, and be ** or something.

You wake up every day in the comfort of modern life. What if you woke up every day to find yourself living in a world where dinosaurs roamed everywhere? Would humans have survived if they had lived in an environment with dinosaurs and Tyrannosaurus rex stomping their feet outside?

The greater threat should be some small gregarious carnivorous dragons of one or two hundred pounds... It's like a pack of wolves! Much and faster!

That's the most dangerous thing.

The formation of all species on the earth is staged, or the result of natural selection and natural evolution, and it also revolves around the rules of natural selection. In different eras, biological species will be born randomly and will be eliminated randomly, which is the inevitable law of survival of the fittest. At that time, dinosaurs, including human beings now, actually appeared in stages, and it was also a kind of natural selection and natural evolution given by the earth to organisms.

After the extinction of the dinosaurs, mammals began to develop, and then primates appeared, about 5 million to 6 million years ago, Australopithecus tried to come from the tree to the tree because of environmental changes, if the environment does not change, Australopithecus may have to delay the time to get off the tree, this delay does not matter, the subsequent things will have to change.

Human beings are special because they have intelligence, and they seem to be incompatible with other creatures on the earth, which is not the case, and human beings are just creatures on the earth, because of the increase in brain capacity, because they have learned to use tools, language, and cooperation, and gradually have high intelligence, which is not achieved overnight, it is gradual, it is logical, it is in line with the trend of life evolution, and there is no particularity.

Because there is a good change in the era of dinosaurs, and then there is a large space for dinosaurs to live in, and only through mutation can humans be slowly converted.

After the extinction of the dinosaurs, mammals began to develop, and later primates appeared. About 10,000 to 10,000 years ago, Australopithecus tried to move from one tree to another due to environmental changes. The ape can delay the time of getting off the tree, and the delay does not matter, the follow-up.

At that time, it was necessary to have such an experience before we could evolve human beings, and only then did we conform to the laws of evolution, and it was also very common-sense.

Fish, mosquitoes, flies, pangolins, baby fish in the ocean. All of these lives have survived. At that time, it was not only dinosaurs but also Archaeopteryx and various large plants that became extinct.

There were birds, microbes, algae, fish and some large sharks, and all of these lives survived, and the only species that went extinct at that time were dinosaurs, because dinosaurs lived on the ground at that time and were hit very hard.

Primitive mammals, as well as insects, ancestors of birds, and much more survived. At that time, it was not only the dinosaurs that became extinct, but also large creatures of more than 25 kilograms of terrestrial animals and ammonites and marine reptiles of marine animals.