By Stephen Beech A fossil skull found 83 years ago originally thought to be a teenage Tyrannosaurus rex actually comes from a separate species of tyrannosaur, according to new research. Scientists, ...

NEW YORK — Scientists have long puzzled over the origins of a mysterious dinosaur excavated in the 1940s: Was it a young T. rex or another type of dinosaur? At first, researchers had only a ...

Paleontologists for decades debated whether meat-eating dinosaur Nanotyrannus was actually just a juvenile Tyrannosaurus. But within a span of five weeks, the matter seems to have been definitively ...

DENVER (KDVR) — Details about a juvenile Tyrannosaurus rex fossil discovered by three boys in North Dakota are beginning to take shape at the Denver Museum of Nature and Science, including its size, ...

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