Fortune telling dinosaur

It should not be a problem that dinosaurs can live to 100 ~ 200 years old.

Little dinosaurs like Meijawlong can live for three years; Dinosaurs as big as Tyrannosaurus rex grow wildly and can live for about 30 to 40 years; A giant dinosaur like brachiosaurus can live for about 100 ~ 1 100 years.

The life span of animals is often related to their growth patterns. Animals with unlimited growth live longer than animals with limited growth. If the unlimited growth mode of living animals is applied to the study of dinosaurs, the time required for some groups of dinosaurs to hatch from eggs to adulthood is 26 -38 years in protoceratops, 82- 1 18 years in medium sauropods and more than 100 years in giant sauropods, such as brachiosaurus. Then, if you grow into an adult dinosaur and live for the same time, Brachiosaurus can live for about 300 years.

Another factor affecting the growth of animals is their metabolism. On average, warm-blooded vertebrates grow at least 10 times faster than cold-blooded animals. The faster the growth, the shorter the life span; The slower you grow, the longer you live. ?

Are they warm-blooded or cold-blooded This is a key for us to correctly estimate the life span of dinosaurs. A lot of evidence shows that many dinosaur groups are warm-blooded animals. If this is true, the life span of dinosaurs can be calculated by the growth pattern of living warm-blooded vertebrates. As a warm-blooded dinosaur, individuals can live for decades to more than a hundred years. If you are a cold-blooded animal, you can live to be 200 years old or longer. Among the living animals, reptiles have a long life span, especially turtles, which can reach more than 200 years old (it is reported that turtles between 2000 and 3000 years old have been found in China). Birds are also one of the oldest species. On the contrary, mammals are dwarfed and have a relatively short life span. Some scientists found that these dinosaurs died in 120 years after studying the annual rings of dinosaur bones. There is no evidence that they died of old age slowly after a peaceful life. Many dinosaurs died in accidents. Old dinosaurs, young dinosaurs and sick dinosaurs were the main prey of carnivorous dragons. So 120 years old is not the age for dinosaurs to live long. Excluding the factors of abnormal death, it should not be a problem that dinosaurs can live to 100 ~ 200 years old. They are the longest-lived animals except turtles.