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A new species of dinosaur, Gualicho shinya, had tiny arms like T. rex despite coming from a separate continent, suggesting this feature evolved for a reason
T. Rex Like You Haven't Seen Him: With Feathers - The New York Times
T. Rex Wasn't The Only Dinosaur With Absurdly Tiny Arms
Researcher Argues Tiny T. Rex Arms Had Big Purpose
Giganotosaurus vs. T. Rex: a big dinosaur battle
Types of Tyrannosaur Dinosaurs and Origins of T. Rex
Bwana joen kynästä: heinäkuuta 2016
Was Spinosaurus Bigger Than T-Rex?
Tiny Tyrannosaur Hints at How T. Rex Became King - The New York Times
Tyrannosaurus - Wikipedia