The dinosaurs also have warm blood

French researchers have confirmed that some Cretaceous dinosaurs are as hot-blooded as mammals, contrary to current assumptions that dinosaurs are cold-blooded like reptiles and distant relatives. them.

To achieve this conclusion, scientists from the French National Research Institute (CNRS) analyzed the isotopic composition of oxygen absorbed by dinosaurs and trapped in specific mineralized tissues. is in their fossil enamel.

Scientists note that the metabolism of the dinosaurs studied (the Cretaceous period, from 14.5 million to 65.5 million BC) is similar to that of animals. there is breast today.

Scientists say they will study the pattern of the older Cretaceous and Triassic dinosaurs. However, dinosaur fossils during these periods were rare and owners feared the analysis could damage them.

The existence of hot blood dinosaurs contradicts the assumption that the cause of their extinction is due to a falling meteorite that causes the climate to suddenly cool. Warm-blooded animals are more resistant to climate change than cold-blooded animals.

Dinosaur skeleton of the Triassic period (Photo: dinosaur.net)

WITH