Dinosaurs were neither cold-blooded nor warm-blooded, study finds

Dinosaurs, like reptiles like crocodiles and lizards, have been considered for a long time to be long and clumsy and cold-blooded animals - but in recent years they may be warm-blooded animals like mammals and birds There is an increasing number of signs that it may not. But a new study by New Mexico University in Albuquerque shows that these long dead creatures may just be a combination of both.

The new discovery of Science magazine suggests that the metabolic system of dinosaurs may be far more complicated than previously thought.

Researchers long believed that animals such as ancient lizards are warm (commonly known as cold-blooded animals) - that is, they were able to exercise outside the body to help regulate their internal temperature I rely on temperature. This is why many reptiles become dull in the cold season. On the other hand, mammals are endothermic (or warm blooded) because they can regulate body temperature in the body. Keeping the temperature inside the body high requires a lot of energy, but that also means that mammals can grow more rapidly and grow faster.

However, researchers looked at the bones of the dinosaurs and found signs of surprisingly rapid growth - impossible for animals with body temperature. We need a lot of energy. Are these creatures truly endothermic?

In this article, scientists decided to conduct various metabolic studies. They compared growth rate, adult size and metabolism of 381 species including 21 dinosaurs and extinct vertebrates. The idea is that the higher the growth rate, the higher the animal's metabolic rate. High metabolism is often an endothermic warm blood system

Indeed, they discovered that the high growth rate appeared to be consistent with the high metabolism of warm-blooded animals, but the low growth rate was related to the low metabolic rate of cold-blooded animals. The dinosaur seems to be sitting in the middle, overlapping with endothermic and isothermal animals. Scientists correctly call them "intermediaries" ("meso" basically means Greek and "intermediate").

Today, authors point out that there are several moderate to moderate species. Animals like tuna and leatherback turtle can regulate the internal temperature to some extent, if not like a warm-blooded animal.

The research authors wrote that "dinosaurs dominate the flow of substances and energies of terrestrial ecosystems for over 135 million years." Therefore, our results are important in understanding the ecosystem of the ancient Mesozoic.

Indeed, we are not fully aware of how metabolism works or how it occurs, leading to a clear conclusion about dinosaurs. Dinosaurs may not be warm blooded animals or cold-blooded animals, but there is an "intermediate" type of metabolism that is not suppressed yet. All dinosaurs may be warm blood or cold blood, but some species adapt to other directions. If you think that this last thought is confusing, remember that not all modern mammals will heat their blood in exactly the same way. Fast, hungry cheetahs have typical warm blood metabolism, but the metabolism regulated by the original platypus move is closer in many respects to lizards of the same size rather than other mammals. Some of the more complex, paleontologists claim to have slow, moving prehistoric mammals (Myotragus, Cave Goat, etc) have true cold blood metabolism.

According to a scientist, dinosaurs are warm-blooded animals that judge metabolism by estimating weight and growth rate based on species fossils, including Tyrannosaurus · Rex, like today's mammals. Michael D'Emic, a paleontologist at Stony Brook University in New York, dubbed the conclusion of other researchers last year that dinosaurs are neither cold nor warm blood, but there is metabolism between them. Since the 19th century scientists have discussed how dinosaurs are slow, cumbersome, cold, or have warm blood physiology, and make life more vibrant .

Paleontologist Michael D'Emic said in a new study he found evidence that these ancient creatures are completely warm blood on dinosaur bones. After reviewing the results of the research widely published in 2014, D'Emic came to this conclusion. This study showed that dinosaurs are not cold or warm blood and are two types of mixtures. In a study announced last year in scientific journals, researchers found that by establishing an equation based on the weight of the dinosaur (expressed in the size of the femur) and the growth rate (represented by the circle of fossils) The metabolism of the dinosaur species of. Annual rings, such as annual rings, define the period of growth stagnation, while the space between the rings represents a period of rapid growth.