65 million years ago, an asteroid with a diameter of 10 kilometers hit the Earth, causing the fifth mass extinction, of which the dinosaurs suffered the most.
But the dinosaurs were not all extinct, to be precise, only the non-avian dinosaurs were extinct, and the remaining dinosaurs with feathers, hollow bones and short flights continued, and gradually evolved into today's birds, and now the chickens, ducks and geese we eat are all descendants of dinosaurs.
Unlike most dinosaur promotional images, real dinosaurs are not all green, and even scales are not necessarily present, such as avian dinosaurs or theropod dinosaurs with feathers, and fossil evidence also shows that dinosaurs were not only diverse and colorful, but not carved out of a mold.
As for whether dinosaurs were cold-blooded animals, there are now new research progresses, at least feathered dinosaurs are not cold-blooded but warm-blooded, because small avian dinosaurs move very quickly and are not slow-moving cold-blooded animals, while other dinosaurs may be in a state of cold-blooded and warm-blooded.
There is also the fact that dinosaurs as a species throughout the Mesozoic Era, they actually spanned the Triassic, Jurassic and Cretaceous three different periods, each period was a different dinosaur in the protagonist, the Tyrannosaurus rex and stegosaurus we are familiar with have never appeared at the same time, there are thousands of years between them.
So far, paleontologists have discovered more than 1,000 kinds of dinosaurs, but they believe that these dinosaurs only account for 30% of the dinosaur category, and even considering the fossil fragments of hundreds of billions of years, some dinosaurs may never be discovered, and at present, through the analysis of fossils and bone restoration, only about 50 new dinosaur species can be identified each year.
Then some people will think: since there are dinosaur eggs and dinosaur fossils now, is it possible for us to build a real Jurassic park in the future to resurrect dinosaurs?
The answer is most likely impossible, because dinosaur fossils and dinosaur eggs have long been petrified, and there is no dinosaur DNA in them, and because DNA is degradable, even if we extract some from some creatures or even amber in the future, what we get is only some broken information, which is far from enough to resurrect dinosaurs.
In fact, for us humans, the most important thing to thank is the asteroid that extinct most of the dinosaurs 65 million years ago, because in front of the dinosaur-dominated reptiles, small mammals had no chance to come out at all, until the asteroid from the sky triggered the fifth five-year mass extinction, the ancestors of small mammals that looked a bit like mice were able to be liberated from the underground dormancy, and began to really go to the surface to boldly evolve, and finally gave rise to primates.
The history after the primates is clear, that is, Homo sapiens was born, which is who we are today, and the science fiction world appeared very early: what if the dinosaurs had not gone extinct and evolved civilization?
In fact, this is not exactly science fiction, because paleontologists have found that the dinosaurs did have a high level of intelligence, and they also had well-developed forelimbs and social characteristics, which may make them intelligent dinosaurs.
Overall
Although it is unlikely that we will actually resurrect dinosaurs in the future, if we collect enough data on various aspects of dinosaurs in the future, we may be able to create mechanical dinosaurs with simulated skins.