Paleontologists have discovered and documented 16,600 footprints left by theropods, the dinosaur group that includes the ...

Scientists have confirmed that Nanotyrannus was a mature species, not a young T. rex. A microscopic look at its hyoid bone ...

Each week, SPIN digs into the catalogs of great artists and highlights songs you might not know for our Deep Cut Friday ...

At the end of the Cretaceous Period, a type of giant reptile called mosasaurs occupied and dominated oceanic food webs.

A remarkably well-preserved dinosaur fossil has arrived at the Smithsonian’s National Museum of National History. According ...

For decades, a small tyrannosaur skull has divided paleontologists over whether it belonged to a separate species or a ...

New research has overturned decades of uncertainty by showing that Nanotyrannus was a fully grown predator, not a juvenile T. rex.

Was Nanotyrannus a bona fide species or just a teenage Tyrannosaurus rex with a lot more growing to do? Scientists have settled that debate.

Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers.

Anyway, the story explains that paleontologists since the 1940s have classified a certain fossil, Nanotyrannus, as a juvenile T-rex. The article termed it a “teenage Tyrannosaurus rex,” which made me ...