It’s hard to overstate how rare and exciting a dinosaur mummy is. And yes, the fossil called “Medusa” could be a dinosaur mummy — the remains of an Edmontosaurus about 66 million years ...

New University of Maryland research suggests that dinosaur parenting strategies helped transform the Mesozoic world, as “latchkey kid dinosaurs” spread into ecological niches their parents left ...

Simulations calculated Tyrannosaurus speed from the motion of its swaying tail, finding that the massive dinosaur was a ...

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 ...

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

Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in ...

A team of researchers has discovered 16,600 footprints belonging to theropods — the dinosaur group that includes the ...

The recently acquired skull of the dome-headed dinosaur Pachycephalosaurus. USNM PAL 803273, Department of Paleobiology, Smithsonian Institution. Gift of Eric and Wendy Schmidt. Photo by James D.

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.

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