The Tyrannosaurus rex is dinosaur royalty, an iconic and instantly identifiable species – and according to a new study, as many as 1.7 billion of these beasts roamed Earth before an unfortunate meeting with an asteroid. It takes a lot of number crunching to figure this out, everything from average lifespan to sexual maturity to the number of T. rex eggs that survived has to be calculated and factored in to reach an estimate. While 1.7 billion is…
