Tyrannosaurus rex Had Mammal-Like Body Temperature, Study Finds
A new analysis of Tyrannosaurus rex teeth indicates the ancient predator maintained a body temperature of about 36.3 degrees…
Paleontologists Discover First-Ever Adult Tyrannosaurus rex Trackway
Paleontologists in North Dakota have unearthed a set of 66.5-million-year-old fossilized footprints that can be confidently attributed to…
Tyrannosaurus rex Scavenged Duck-Billed Dinosaurs in Ancient Wyoming, Bite Marks Reveal
Thousands of fossilized bones from a Cretaceous-period bonebed in Wyoming, the United States, offer rare physical evidence that…
New Jurassic Fossil Reveals How Birds Lost Their Dinosaur Tails
Paleontologists in China have described a small, previously unknown Jurassic bird whose short tail offers new evidence for…
New Feathered Dinosaur from China Had Peacock-Like Tail
A new genus and species of four-winged pennaraptoran dinosaur from the Early Cretaceous of northern China is adding…
Rare Ostrich-Like Dinosaur Fossil Found on Canadian Island
Paleontologists in Canada say they have recovered a dinosaur tail vertebra from 75- to 80-million-year-old marine rocks on…
90-Million-Year-Old Patagonian Fossil Reveals Missing Chapter in Evolution of Alvarezsauroid Dinosaurs
A remarkably complete skeleton of the alvarezsauroid dinosaur species Alnashetri cerropoliciensis from Patagonia, Argentina, as well as two…
In Morrison Formation, Very Young Sauropod Dinosaurs Fueled Food Chain
New research led by University College London paleontologists shows that newly-hatched long-necked giants were prey for multiple carnivores…
160-Million-Year-Old Dinosaur Footprints Discovered in Chile
The newly-discovered theropod and sauropod footprints are part of the Late Jurassic Majala Formation, and represent the oldest…
New Species of Triassic Carnivorous Dinosaur Identified in Argentina
A new genus and species of theropod dinosaur being named Anteavis crurilongus has been described by a team…
New Species of Abelisaurid Dinosaur Discovered in Argentina
A new genus and species of abelisaurid theropod dinosaur has been discovered by a team of paleontologists from…