The temperature of the body differed from individual dinosaur groups: large vegetation latches (the nature of titanosauris) were probably close to warm blood, and predatory vectors had low body temperature. The scholars came to this conclusion for the first time studying the shell of dinosaur eggs as an indicator of the temperature of the female body during ovulation. The results of the study are presented in Nature Communications.

Reptile eggs form in the body depth, in the lower egg. The proportion of two isotopes (carbon-13 and oxygen-18) inshell shows the temperature of the shell minerals (calcium carbonate). First, scientists found out how the body temperature of modern reptiles and birds (dinosaurs streams) affects the isotope ratio.

Having obtained this table, the paleontologists have analysed the shell of titanosaurov (Gyanta herbs living in Argentina 80 million years ago) as well as the fossils from Mongolia (from small predatory araptors aged 71-75) millions of years)

Dinosaurs stuck halfway from cold to warm blood.

Turns out the body temperature of the giant lizards was high enough - about 37, 7 degrees Celsius. This is probably due to the size of animals: modern leather skulls, for example, have higher temperatures than their small relatives.

Wirapers were somewhat colder: below 32, 2 degrees Celsius. However, the analysis of minerals on the soil surface, where the eggs of these predatory dinosaurs were found, showed that the ambient temperature was approximately 26, 1 degree. So dinosaur blood was warmer than the environment, and they were not really cold-blooded, completely dependent on external conditions.