Science has published a new study that says 2.5 billion tyrannosaurs have ever inhabited Earth. Study author Charles Marshall decided to find out when he thought about the survival of the dinosaur species.
The number includes only adult carnivores, because scientists concluded that younger tyrannosaurs were in different ecological niches. For this reason, it was decided not to take into account the survival rate of young lizards.
The team used a mathematical model that relied on known Tyrannosaurus rex finds and surviving comparable species such as lions and Komodo dragons to approximate the Cretaceous predator’s geographic range, population density, warm-bloodedness, and growth curve. Scientists found that over the entire 2.5 million years of existence, about 2.5 billion individuals survived to adulthood, and about 20,000 tyrannosaurs were alive at any moment. According to their calculations, there were 80 thousand individuals per tyrannosaurus fossil, in regions successful for archaeologists there were 16 thousand individuals.
Of course, these are only rough estimates. It turns out that about two adult tyrannosaurs existed in the territory of the modern city of Washington. Not very much, but not very little, so as not to be afraid of meeting them.