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 ...

In prehistoric times, the Earth was crawling with several giant versions of the animals we know today, including sloths the ...

During the Oligocene epoch about 33.9 to 23 million years ago, most mammals remained small, but one giant, Paraceratherium, ...

Here, paleontologists discovered the jaw of an unusual prehistoric creature ... It wasn’t just a new species, it was “the world’s largest worm lizard,” researchers said.

The new species would have resembled the iconic "sandworms" from the science fiction franchise "Dune", one researcher said.