The new prediction suggests fewer T. rex individuals roamed our planet than scientists previously thought.
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.
Study author Eva Griebeler , an evolutionary ecologist at the Johannes Gutenberg University of Mainz in Germany, told Live Science that her new model factored in information about T. rex that the original study's authors overlooked, which resulted in the reduced number. But Griebeler disagreed with some of the data imputed into this model. She believed Marshall's team overestimated the survival rates and egg-laying capabilities of T. rex, as well as the number of generations that existed during this time, which skewed the results.
The original study was the first to estimate how many T. rex lived on Earth and"was driven in part by pure curiosity," Marshall said. It was like wondering"how many stars there are in the sky," he added. As a result, the team was happy to have come up with a decent estimate at all. But the researchers are glad that it has now been updated to a"more realistic" estimate, Marshall said.
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