The atmosphere of Earth during the Mesozoic era, between 252 and 66 million years ago, contained far more carbon dioxide than it does today and total photosynthesis...
Scientifically named Khankhuuluu mongoliensis, the newly-identified tyrannosauroid species is the closest-known ancestor to Tyrannosaurus rex.
Khankhuuluu...
The genus Tyrannosaurus most likely arose in North America, although its direct ancestors migrated over from Asia more than 70 million years ago, according...
Large theropods were as smart as reptiles but not as intelligent as monkeys, according to new research led by University of Bristol paleontologists.
Tyrannosaurus...
The discovery of Tyrannosaurus mcraeensis, a sister species of the famous Tyrannosaurus rex, suggests that tyrannosaurid dinosaurs originated on Laramidia,...
Tyrannosaurs are among the most intensively studied and best-known dinosaurs. Despite this, their relationships and systematics are highly controversial....
Non-avian theropod dinosaurs such as the iconic Tyrannosaurus rex have long been portrayed with their teeth fully visible, similar to living crocodiles....
Daspletosaurus wilsoni, a tyrannosaurid dinosaur that lived 76.5 million years ago in what is now Montana, the United States, displays a unique combination...
In new research, Dr. Stephan Lautenschlager from the University of Birmingham analyzed the shape of the eye sockets in 410 specimens of dinosaurs and related...
In March 2022, College of Charleston’s Professor Scott Persons and colleagues suggested that Tyrannosaurus rex should be reclassified as three species:...
Meraxes gigas, a huge meat-eating dinosaur that lived in Argentina some 94 million years ago, had short arms like Tyrannosaurus rex.
Meraxes gigas. Image...
An analysis of over three dozen specimens of Tyrannosaurus rex finds that they exhibit such a remarkable degree of proportional variations that the pattern...
Using a CT scanner and a technique called dual-energy computed tomography (DECT), a team of scientists in Germany has identified a bone disease called...
Paleontologists have analyzed the morphology of the neurovascular canal in the well-preserved jaw of Tyrannosaurus rex using computed tomography techniques....
In a paper published in the journal PeerJ, paleontologists present bite force estimates for a juvenile Tyrannosaurus rex based on mechanical tests designed...
Animals display a variety of gaits and walking speeds. It is commonly assumed that they minimize locomotor energy expenditure by selecting gait kinematics...
Paleontologists estimate that the abundance of one of the best-known dinosaurs, Tyrannosaurus rex, at any one time was about 20,000 individuals, that the...
Non-avian theropod dinosaurs like Tyrannosaurus rex relied less on speed, more on energy-saving, according to a new study published in the journal PLoS...
