Jane, long thought to be a juvenile Tyrannosaurus rex, has been reclassified as a new species called Nanotyrannus lethaeus, according to a recent study by researchers Dr.

Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type ...

Debate kicked off in 1988 when a single small tyrannosaur skull discovered four decades earlier was given its own species ...

A new analysis of a fossil unearthed in 2006 provides a fresh line of evidence that a separate tyrannosaur lineage called ...

For decades, paleontologists have argued over one mystery: was Nanotyrannus a real species, or just a teenage Tyrannosaurus rex? Now, a new fossil has finally ended the debate—and rewritten the story ...

New research has identified a dinosaur "mummy zone" in a series of ravines near Lusk, Wyoming. It's produced two mummies of a fleshy dinosaur with ...

The debate over Nanotyrannus’ identity is finally over. A remarkably preserved fossil proves it was a mature species, not a teenage T. rex. This discovery rewrites how scientists understand ...

PHOENIX — Dozens of spectators, some as young as 9, crowded into City Hall to meet Victoria, one of the most complete Tyrannosaurus rex fossils uncovered to date. To oohs and aahs, Mayor Kate Gallego ...

For many years, paleontologists have debated about whether there was a smaller relative of the Tyrannosaurus rex, or if those ...

A fossil once locked in prehistoric combat has just rewritten one of paleontology’s longest-running debates — and upended what scientists thought they knew about Tyrannosaurus rex.

Paleontologists have examined an exceptionally well-preserved, near somatically mature tyrannosaur skeleton from the Hell Creek Formation of Montana.

For years, the "dueling dinosaurs" in a North Carolina museum were believed to be a Triceratops and Tyrannosaurus rex. However, an article published on October 30 in the journal Nature has a different ...