A land of giants: This is the best definition for Lake Pebas, a mega-wetland that existed in western Amazonia during the Miocene Epoch, which lasted from 23 million to 5.3 million years ago.
The iconic evergreen forests of the Pacific Northwest haven't always been here.
New clues emerging from fossils found in the oldest soils on Earth suggest that multicellular, land-dwelling organisms possibly emerged much earlier than thought.
Unlike today's zebras, prehistoric horses in parts of North America did not make epic migrations to find food or fresh water, according to a new study by the University of Cincinnati.
More than 85 well-preserved dinosaur footprints—made by at least seven different species—have been uncovered in East Sussex, representing the most diverse and detailed collection of these trace fossils from the Cretaceous ...
UO geologist Greg Retallack has dirt on his hands—and at 3.7 billion years old, it might be some of the oldest dirt on Earth.
A scientist with the Canadian Museum of Nature has answered a long-standing mystery about why fossils of ankylosaurs—the "armoured tanks" of the dinosaur world—are mainly found belly-side up. In doing so, he has ruled ...
A fossilized trackway on public lands in Lake County, Oregon, may reveal clues about the ancient family dynamics of Columbian mammoths.
In recent years, researchers have identified a small group of stalactites that appear to have calcified underwater instead of in a dry cave. The "Hells Bells" in the El Zapote cave near Puerto Morelos on the Yucatán Peninsula ...
Fanged kangaroos – an extinct family of small fanged Australian kangaroos – might have survived at least five million years longer than previously thought.