Were there really dinosaurs in ancient times, and how did ancient dinosaurs come about

Yes, not in ancient times, but in the Mesozoic Era.

The diversity of dominant vertebrates dominates global terrestrial ecosystems.

More than 160 million years old. Dinosaurs first appeared 230 million years ago in the Triassic period.

It was destroyed during the late Cretaceous period, about 65 million years ago, during the late Cretaceous period. In 2005, Japanese archaeologist Kansuzu discovered new evidence that dinosaurs may have hatched in eggs.

Archaeopteryx discovered in 1862.

The fossil is very similar to the Eugenesaurus fossil, except that the Archaeopteryx fossil has traces of feathers, suggesting that the dinosaur may be a close relative of the bird. Since the 1970s, many studies have pointed to the possibility that modern birds are most likely direct descendants of theropod dinosaurs.

Descendant. Most scientists consider birds to be the only dinosaurs that have survived to this day, while a few even believe that they should be classified in the same class. Crocodiles are modern relatives of another group of dinosaurs, but they are more closely related to dinosaurs than birds.

Dinosaurs, birds, and crocodiles are all reptiles.

The clade of Archosaurus first appeared in the Late Permian and became the dominant fauna in the Middle Triassic.

In the first half of the 20th century, both scientists and the general public regarded dinosaurs as slow-moving, lazy, cold-blooded animals. But the Dinosaur Renaissance, which began in the 1970s, suggested that dinosaurs may have been active warm-blooded animals and may have behaved socially. Numerous recently discovered evidence of the relationship between dinosaurs and birds supports the hypothesis that dinosaurs were warm-blooded.

There really is, otherwise how would archaeologists now find so many dinosaur fossils?

Hope it helps.

*Yes**, there really were dinosaurs in ancient times. Dinosaurs first appeared in the Triassic period 230 million years ago and died out in the late Cretaceous period, about 65 million years ago, during the late Cretaceous period. Therefore, dinosaurs did exist in ancient times.

Dinosaurs evolved from ancient reptiles to adapt to changes in their environment.

Dinosaurs are vertebrate reptiles, and in ancient times, about 570 million to 248 million years ago, Huchang's soft and boneless creatures evolved into fish with internal skeletons; Fish, in turn, gave rise to land-walking amphibians, which then evolved into reptiles. One of the reptiles evolved into the Primosaurus.

The earliest dinosaurs appeared about 240 million years ago, and were born in the terrestrial swamps of the Mesozoic Era, with a long middle neck and tail, and longer hind limbs than the forelimbs and tails, which could stand upright.

In 1842, the British paleontologist Sir Richard Owen (1804-1892) coined a name for them in Latin, "terrible lizards". The term "dinosaur" was coined by Japanese biologists and introduced to China. Translate this Latin name as "dinosaur".

Dinosaurs are not songlizards. It is one of the first advanced organisms on Earth to be able to walk upright on its own.

Causes of the extinction of the dinosaurs

1. Climate change says that wild oranges are made

65 million years ago, the Earth's climate changed dramatically, and the temperature dropped dramatically, causing the oxygen content of the atmosphere to drop, making it impossible for dinosaurs to survive. It is also believed that dinosaurs were cold-blooded animals with no hair or warm organs, unable to adapt to the drop in the earth's temperature, and were frozen to death.

2. Volcanic eruption theory

Because of the eruption of volcanoes, carbon dioxide is ejected in large quantities, causing the greenhouse effect of the earth to be intense, causing food to die. In addition, volcanic eruptions cause large amounts of salt to be released, the ozone layer ruptures, and harmful ultraviolet rays irradiate the earth's surface, causing the extinction of life.