When a team of scientists reanalyzed a cat-sized dinosaur fossil discovered more than two decades ago, they realized the remains of the predator’s lunch had been hiding undetected in its stomach.

COLORADO SPRINGS, Colo. — Colorado researchers discovered fossils of a new species of mammal at a site on the edge of Colorado Springs. The Denver Museum of Nature & Science researchers announced the ...

Paleontologists have uncovered a previously unknown prehistoric mammal species that was among the largest of its time. The partial remains of the newly identified species were originally collected ...

An international team has reconstructed the genome organization of the earliest common ancestor of all mammals. The reconstructed ancestral genome could help in understanding the evolution of mammals ...

NEW YORK (AP) — An unusual find in China suggests some early mammals may have hunted dinosaur for dinner. The fossil shows a badgerlike creature chomping down on a small, beaked dinosaur, their ...

It’s like a man-bites-dog story from prehistoric times, although researchers had to take steps to verify that it was not a forgery. By Kate Golembiewski The work of a paleontologist is often like ...