A new analysis of an isolated spinosaur tooth from East Sussex shows that several distinct spinosaur lineages inhabited Britain during the Cretaceous period.
Spinosaurus...
Vertebrates and arthropods are two of the most successful and frequently fossilized animal groups, but direct evidence of their interaction in deep time...
The dinosaur-bird transition is among the most fascinating events in evolutionary history, but several aspects such as changes in reproductive system,...
Non-avian theropod dinosaurs such as the iconic Tyrannosaurus rex have long been portrayed with their teeth fully visible, similar to living crocodiles....
The dinosaur clade Maniraptora includes the ancestors of birds, and most maniraptoran dinosaurs used their hands for grasping and in flight, but early...
Over evolutionary history, many different species of animals have evolved very large body sizes. The general consensus has been that an animal grows to...
The 80-cm- (31.5-inch) long footprint was possibly made by a Megalosaurus-like theropod dinosaur, and is assigned to the ichnogenus Megalosauripus.
The...
Using X-ray computed tomography scan data, paleontologists reconstructed the braincase endocasts of Baryonyx walkeri and Ceratosuchops inferodios from...
Cratonavis zhui, a new species of pygostylian bird from the Early Cretaceous Jehol Biota of China, had a unique combination of a dinosaurian skull with...
A new genus and species of theropod dinosaur with a streamlined body as in diving birds has been identified from a well-preserved skeleton found in Mongolia.
Life...
A new genus and species of abelisaurid theropod dinosaur has been described from the fossils found in Patagonia, Argentina.
An artist’s reconstruction...
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...
Paleontologists have unearthed a well-preserved cervical vertebra of a medium-sized abelisaurid ceratosaur in the Bahariya Oasis of the Western Desert...
A new genus and species of abelisaurid theropod has been identified from a partially complete skull found in northwestern Argentina.
An artist’s reconstruction...
An international team of paleontologists from Australia, Canada and Italy has documented more than 100 footprints of hadrosaurid and tyrannosaurid dinosaurs...
Some species of theropods (two-legged dinosaurs) could reach speeds of 45 kmh (28 mph), according to analysis of Early-Cretaceous trackways of theropod...
A new genus and species of toothless noasaurid ceratosaur has been identified from an exceptionally complete skeleton found in southern Brazil.
Life reconstruction...
