Biological cycle of Tyrannosaurus dinosaurs

The newborn Tyrannosaurus typhoon had all the chances to live up to adulthood but at least it had to survive the first two years of life.

Dr. Gregory Erickson
(Photo: bio.fsu.edu)

Dr. Gregory Erickson of the University of Florida (USA) has confirmed this. He and his colleagues sought to determine the biological cycle of Tyrannosaurus dinosaurs.

The scientists observed a Tyrannosaurus dinosaur population of 22 animals belonging to the Albertosaurus sarcophagus genus. Their fossils are found in Alberta in Canada, 200 kilometers northeast of Calgary. According to archaeologists, this dinosaur population has died in a short time. The detection of many fossils in one place proves that they live in groups or at least in small groups.

According to Dr. Erikson, Tyrannosaurus dinosaurs may have biological cycles similar to long-lived mammals or mammals. Once you pass the threshold of the first two years of life - during this time baby dinosaurs can be prey to predators - it has many chances to live up to adulthood.

Between the ages of 2 and 13, the average Tyrannosaurus dinosaur mortality rate was 3.5%, so it had a chance to grow peacefully. This is explained by the fact that young dinosaur fossils are almost absent from museums.

But once the ' adolescence ' is over, the situation worsens: the mortality rate between the ages of 14 and 23 is 22.9%. The challenges of middle-aged reproductive life and lifestyle increase the risk of death in this age group. Tyrannosaurus species rarely live well to old age. Only one of the dinosaur fossils found has reached a relatively high age of 28 with signs of aging such as arthritis, calcium loss and other weakened diseases that often occur in mammals and other long-lived animals.

Tyrannosaurus dinosaur (Photo: dinosaur)

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