By A Mystery Man Writer
The iconic predator’s estimated abundance means the T. rex fossils we have today are exceedingly rare.
Billions and billions of tyrannosaurs walked the Earth
Research Reveals 2.5 Billion T. Rexes Once Inhabited Earth
Number of T-rexes that lived in North America could have been in billions
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Study: 2.5 billion T. rex roamed Earth, but not all at once - Hawaii Tribune-Herald
Det har funnits 2,5 miljarder T.rex
Newly discovered, primitive cousins of T. rex shed light on the
Researchers now have an estimate for just how many T. rex once roamed Earth
What Did Dinosaurs Really Look Like? 'Life on Our Planet' Filmmakers Explain How They Knew - Netflix Tudum
Palaeontology: More than 2.5 BILLION T. Rexes roamed the Earth over their 2.5 million years