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That's 800 million fewer than a previous estimate suggested.
Prior Extinction Trex
1.7 billion Tyrannosaurus rexes walked the Earth before going extinct, new study estimates
Tyrannosaurus rex, t rex
What is the evidence for and against the claim that T-Rexes were scavengers? - Quora
T. rex IFLScience
The Maximum Number Of T. Rex To Ever Walk The Earth Was 1.7 Billion, t rex
Tyrannosaurus could have been 70% BIGGER THAN FOSSILS SUGGEST : r/Naturewasmetal
Dinosaurs: Billions of T-Rex once roamed the Earth, scientists say
Footprints show some two-legged dinosaurs were agile
The Maximum Number Of T. Rex To Ever Walk The Earth Was 1.7 Billion, rex
The Total Number Of T-Rex That Ever Walked The Earth Is 2.5 Billion
Fewer T. rex walked the Earth than previous estimated, new study claims
Fewer T. rex walked the Earth than previous estimated, new study claims
How Big Was the T. Rex Population? Study Estimates That There Were 1.7 Billion of Them Lurking Over Earth Prior to Their Extinction
Tyrannosaurus rex, t rex