Researchers Discovered 60-Million-Year-Old Fossil of Giant Possum in Texas's Big Bend National Park Texas is now home not only to cowboys but also to a unique fossil specimen from "Swaindelphys." This ...

Jon G. Fuller/VW Pics/Universal Images Group via Getty Images(BIG BEND NATIONAL PARK, Texas) -- Paleontologists have found fossilized remains of a giant possum-like mammal that lived 60 million years ...

So far, it's the largest marsupial found in the North American Paleocene. Ancient fossil found in Texas could rewrite the record books Paleontologists uncovered a rare fossil of a giant possum ...

Cranium scans of Arctocyon primaevus, a mammal of the Paleocene Epoch, left, and Hyrachuys modestus, a mammal of the subsequent Eocene period, when specialized brains started to become more important.

The fossil dates pack to the Paleocene era ... "What sets this fossil apart are the obvious differences compared to the previously known penguin remains from this period of ...

Fossil remains of Titanoboa cerrejonensis, a 58-million-year-old snake, have been discovered in Colombia's Cerrejón coal mine. This extinct serpent, reaching up to 14 meters and weighing over a tonne, ...

Scientists from New Zealand and Senckenberg finally have some answers, thanks to their recent discovery of a fossil belonging to a giant penguin.

This timeline falls within the late Paleocene era, and more specifically, it's roughly 5 million to 10 million years after the end-Cretaceous extinction, ...

These eggs are thought to have been from the Upper Cretaceous–Lower Paleocene era. The species of dinosaur that laid them were likely wiped out in the end-Cretaceous extinction event triggered ...

Talk about a mother of a discovery: Researchers in Germany have found the fossil of a 48-million-year-old pregnant horse relative, her fetus and bits of her preserved uterus as well.

The Cambrian Period is when shells evolved, so it left interesting rocks. They were first studied by Adam Sedgwick and Roderick Murchison in 1835 in Wales, which the Romans called Cambria.

BIG BEND NATIONAL PARK, Texas — Paleontologists have found fossilized remains of a giant possum-like mammal that lived 60 million years ago.