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The new species, named Tyrannosaurus mcraeensis, was uncovered in the Hall Lake Formation in New Mexico.
T. rex fossil unearthed decades ago is older, more primitive
Dinosaur found in New Mexico predates T. rex, helps solve mystery
A comprehensive diagnostic approach combining phylogenetic disease
Small 'cousins' of T. rex may actually have been growing teenagers
New Mexico scientists study fossil of T. rex relative found near
Fossil found in New Mexico is an older, more primitive relative of
Scientists say they've found T. rex's early ancestor in northeast
Imagine T. Rex. Now Imagine It With Lips. - The New York Times
New Dinosaur Discovery in Patagonia, Nature and Wildlife
Tyrannosauridae - Wikipedia
Tyrannosaurus rex, facts and photos
Tyrannosaurus, Dinosaur Wiki