Palaeontology: More than 2.5 BILLION T. Rexes roamed the Earth over their 2.5 million years
Tyrannosaurus rex. Their name means ‘tyrant lizard king’ — and as far as popular culture goes, they certainly ruled the dinosaurs. But just how many were there? According to experts from California, the answer is a whopping 2.5 billion of the beasts over the 2.5 million years they roamed North America in the Late Cretaceous. Around 20,000 … Read more