The total number of Tyrannosaurus rex to ever roam Earth has been recalculated by scientists, with new research revealing 1.7 billion of these dinosaur kings existed throughout our planet's history.
In April 2021, a study published in the journal Science estimated that up to 2.5 billion T. rex individuals lived between 68 and 65.5 million years ago, whenroamed Earth. But a new study, published April 18 this year in the journal Palaeontology, has challenged that number, suggesting the actual figure is probably closer to 1.7 billion.
