Reconstruction of Tyrannosaurus mcraeensis. Credit: Sergei Krasinski, edited Newly discovered Tyrannosaurus mcraeensis, potentially T. rex’s closest relative, lived 71-73 million years ago in southern Laramidia,…
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Reconstruction of Tyrannosaurus mcraeensis. Credit: Sergei Krasinski, edited Restudy of fossils collected in New Mexico digs up key clues about T. rex’s origins in North…
New research shows that large dinosaur predators evolved different shapes of eye sockets to better deal with high bite forces. According to new research, large…
T. rex’s short arms may have lowered risk of bites during feeding frenzies. Over the two decades paleontologist Kevin Padian taught a freshman seminar called…
A new dinosaur from the lower Upper Cretaceous of Uzbekistan, Ulughbegsaurus uzbekistanensis, was described from a single maxilla fossil. The University of Tsukuba-led research team…
Tyrannosaurus rex, the fearsome predator that once roamed what is now western North America, appears to have had an East Coast cousin. A new study…
New research from UMD shows ecology changed for tyrannosaurs as they grew up. Slender, agile young tyrannosaurs (left) hunted different prey and did so in…
Juvenile tyrannosaurs tested their chops as they grew to become bone crushers like their parents. Jack Tseng loves bone-crunching animals — hyenas are his favorite…
The skeleton of Trix at Naturalis Biodiversity Center. Credit: Mike Bink Humans and animals have a preferred walking speed. This is, in part, influenced by…
Analysis of what’s known about the dinosaur leads to conclusion there were 2.5 billion over time. How many Tyrannosaurus rexes roamed North America during the…
By closely examining the jaw mechanics of juvenile and adult tyrannosaurids, some of the fiercest dinosaurs to inhabit Earth, scientists led by the University of…
Because it took T. rex up to twenty years to reach adult size, the tyrant king probably underwent drastic changes as it matured. A study…
A graphic thermal image of a T. rex with its dorsotemporal fenestra glowing on the skull. Illustration courtesy of Brian Engh. Tyrannosaurus rex, one of…