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…
Fossil tooth analysis confirms Tyrannosaurus rex was warm-blooded
Fossil tooth analysis confirms Tyrannosaurus rex was warm-blooded Scientists have suspected for nearly 60 years that Tyrannosaurus rex…
Can You Draw a T. Rex Correctly?
Miller: First, the age of Mandrasuchus is incredible. This species evolved in North America in the immediate aftermath…
Exceptionally Preserved Bird Feathers Found in 66-Million-Year-Old Dinosaur Coprolite
Paleontologists in Montana have discovered remarkably preserved feathers of an ancient aquatic bird inside a fossilized dinosaur dropping,…
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…
T. Rex Babies Were No Bigger Than House Cats—But Already Deadly
Paleontologists know very little about Tyrannosaurus rex babies. Given how long these iconic carnivores have loomed over the…
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…
Scientists Finally Think They Know Why T. rex Had Tiny Arms
T. rex’s famously tiny arms may have been the result of one terrifying evolutionary upgrade: an enormous skull…
Giant Tyrannosaur Fossil Found in New Mexico
A large tyrannosaurid dinosaur may have stalked the floodplains of what is now New Mexico nearly 74 million…
T. Rex Could Run Faster Than Usain Bolt, on Its Toes
Tyrannosaurus rex may loom large in our collective imagination, but new research suggests the creature moved more…
Nanotyrannus Represents Distinct Species of Tyrannosaurid Dinosaur, New Research Confirms
Nanotyrannus lancensis — long thought by many to be a teenage Tyrannosaurus rex — was in fact a…
New Study Confirms Partial Hemoglobin Preservation in Dinosaur Remains
Using a technique called Resonance Raman spectroscopy, paleontologists have detected hemoglobin remnants in bone extracts from two dinosaur…