How many years did dinosaurs live on earth

Dinosaurs have lived on Earth for more than 185 million years.

How many years did dinosaurs rule the earth?

Dinosaurs lived on Earth for about 100 million years and were a representative and iconic species of the Mesozoic Era. Dinosaurs only appeared in the middle of the Triassic period, about 100 million years ago. After the Jurassic and Cretaceous periods of the Mesozoic Era, it did not become extinct until 65 million years ago.

Lived together on Earth for 165 million years.

The Mesozoic Era began in the Triassic period about 100 million years ago and ended at the end of the Cretaceous period 65 million years ago. But in the early Triassic period of the Mesozoic Era, there were only primitive reptiles, and dinosaurs had not yet appeared.

Dinosaurs lived on the earth for about 100 million years.

Dinosaur (English name: dinosaur) refers to the most recent common ancestor of Triceratops, modern birds, and Diplodocus and all their descendants.

To facilitate research, dinosaurs can be divided into avian and non-avian dinosaurs. Among them, non-avian dinosaurs lived only in the Mesozoic era (Triassic, Jurassic and Cretaceous) and were all extinct 65 million years ago.

The muscular limbs, long tails, and massive bodies are some of the non-avian dinosaurs. They mainly inhabit woodlands or open areas on lakeshore plains (or coastal plains).

The habits of dinosaurs

Sharp teeth and claws were preyed upon by carnivorous dinosaurs. Tyrannosaurus dinosaurs often went it alone because they sought out lone herbivorous dinosaurs. Some dinosaurs would move in groups, locking on to their prey and swarming and slicing open the prey's abdomen with the second finger of their claws.

Herbivorous dinosaurs generally had some special "equipment" to deal with the attacks of carnivorous dinosaurs, which sometimes consisted of tough leather armor, bone clubs, or bone spikes, and sometimes powerful tails. Such as mallet dragon and so on. Large herbivorous dinosaurs would act in groups, and when threatened, they would collectively hold their ground and fight back.

It first appeared about 220 million years ago and disappeared 65 million years ago Dinosaurs are a collective term for some prehistoric reptiles. It first appeared about 220 million years ago, lived in the Triassic, Jurassic and Cretaceous periods, and existed for 150 million years. During the late Cretaceous period, about 65 million years ago, almost all species of dinosaurs became extinct, but there is an opinion that modern birds are related to some dinosaur.

The name Dinosauria was first coined by British scientist Richard Owen in 1842. It is made up of the Greek words deinos, which means "terrifying" or "extremely huge", and sauros, which means "lizard". The word dinosaur was translated from Japanese and later quoted from China.

Dinosaurs varied greatly in size. The smallest known dinosaurs were only the size of chickens (Mussaurus, whose larvae were only 20 centimeters), but most were huge. The largest is the sauropod dinosaur (Klamelisaurus gobiensis, over 30 meters long and 10 meters high), the largest terrestrial creature ever existed, second only to whales of all creatures.

Many other species of reptiles lived in the same era as dinosaurs. Some species are also huge and bizarre, but they are not dinosaurs. Such as plesiosaurs.

Dinosaurs disappeared 65 million years ago during the Cretaceous-tertiary extinction eventThe usual explanation is that a huge meteorite hit the Earth and caused the extinction (first proposed by Walter Alvarez).But this theory is controversial.

The general term of meteorite refers to the fact that after the meteorite hit the earth, a large amount of dust storm flooded the earth and atmosphere, causing sunlight to be unable to directly reach the earth's surface, and the temperature in various places gradually became colder, and the dinosaurs died and became fossils because they could not survive and forage in the cold climate. Another theory refers to the rapid change in temperature at the poles of the earth at that time, which caused the water level of the sea to rise, causing rivers to block the continents from continent to continent, causing dinosaurs to find it difficult to forage and die.

Remember.

Dinosaurs existed on Earth for about 160 million years.

Dinosaurs are a general term for a class of reptiles that appeared in the Mesozoic era, and most dinosaurs are portrayed by their orthopedic limbs, long tails, and large bodies. They mainly inhabit woodlands or open areas on lakeshore plains.

The term "dinosaur" refers to the dinosaur, the terrifying lizard, which was translated as "dinosaur" by Japanese paleontologists and later became popular in China. The ancient Greek word lizard refers to a group of large, lizard-like reptiles with limbs, tails, or wings.

The dinosaurs disappeared at the end of the Cretaceous period 65 million years ago, becoming a mystery in the history of the evolution of life on Earth, which is still unsolved. All of the earth's past creatures are recorded in fossils. In the strata of the Mesozoic era, many dinosaur fossils have been found.

A large number of bones can be seen in a variety of shapes. In the Cenozoic stratigraphic feast that followed, there were no fossils of non-avian dinosaurs, and now only birds remain, and most scientists agree that "birds belong to dinosaurs".

There are many types of dinosaurs, and their body shape and habits also vary greatly, with the largest fragile dinosaur being more than 50 meters long, while the smallest hummingbird may be less than 10 centimeters. In terms of eating habits, there are docile herbivores and ferocious meat eaters, as well as omnivorous dinosaurs that eat both meat and vegetables.