Humans were marveling at the scale of T. Rexes ever on account that first putting a full skeleton collectively. Now, way to research posted in April 2021, scientists have a higher concept of exactly how a lot of them as soon as referred to as Earth their (transient) home. According to the group at the University of California, Berkeley, about 2.Five billion of these dinosaurs existed throughout greater than 127,000 generations. They reached this estimate via contemplating the dinosaur’s body size, sexual maturity, and energy wishes.