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...
A new genus and species of giant colossosaurian titanosaur has been identified from fossils found in Patagonia, Argentina.
An artist’s reconstruction...
About 50 species of birds on Earth today do not belong to the same group as the other 10,000 currently in existence. Known as the paleognaths, this small...
Paleontologists have described a previously unrecognized genus and species of hadrosaurid dinosaur from a partial bone found in Texas, the United States.
Life...
Paleontologists in India have documented 92 clutches containing a total of 256 fossilized eggs of titanosaur sauropods.
Field photograph of titanosaur...
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...
Most birds today can lift the upper beak independently of the brain case, enabled by a series of mobile joints and bending zones in the skull. The computed...
Paleontologists have, for the first time, described the neuroanatomy of Europasaurus holgeri, a remarkable macronarian dinosaur from the Jurassic period...
Paleontologists have found the fossilized remains of a small mammal foot preserved inside the body cavity of the holotype specimen of Microraptor zhaoianus,...
Dinosaurs evolved a remarkable diversity of dietary adaptations throughout the Mesozoic era, but the origins of different feeding modes are uncertain....
A new genus and species of titanosauriform sauropod dinosaur with an unusual tail has been identified from a partial skeleton found in northeastern China.
An...
Paleontologists have identified a new genus and species of titanosaurian dinosaur from the fossilized remains found in the Brazilian state of Minas Gerais.
Life...
Paleontologists have long debated why groups such as non-avian dinosaurs became extinct whereas mammals and other lineages survived the end-Cretaceous...
Ankylosaurid dinosaurs were heavily armored herbivores with tails modified into club-like weapons. These tail clubs have widely been considered defensive...
Spinosaurus aegyptiacus, a sail-backed theropod dinosaur that lived in what is now North Africa during the Cretaceous period, about 95 million years ago,...
A new genus and species of nodosaurid ankylosaur has been identified from fossils found in Patagonia, Argentina.
Life reconstruction of Patagopelta cristata....
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...
