Paleontologists originally thought that T. rex had three claws, but later determined that it only had two. R. Mickens/©AMNH

Study refutes claim that T. rex was three separate species

Articulated left tibia and pes

A new giant dinosaur gives insight into why many prehistoric meat-eaters...

Illustration of White Rock spinosaurid by Anthony Hutchings. Credit: UoS/A Hutchings

Europe’s largest land predator unearthed on the Isle of Wight

inner core (USC Graphic/Edward Sotelo)

The Earth moves far under our feet: A new study shows...

Yellowstone National Park

Yellowstone’s history of hydrothermal explosions over the past 14,000 years

Andrew McAfee, Carnegie Museum of Natural History

Bizarre meat-eating dinosaur joins ‘Rogues’ Gallery’ of giant predators from classic...

Hot-blooded T. rex and cold-blooded Stegosaurus

Hot-blooded T. rex and cold-blooded Stegosaurus: Chemical clues reveal dinosaur metabolisms

The blue path illustrates a core-penetrating seismic wave moving through a region in the outer core, where the seismic speed has increased because a low-density flow has moved into the region. Credit: Ying Zhou

Seismic waves from earthquakes reveal changes in the Earth’s outer core

Representative Image: Plesiosaur attack, artwork.

How plesiosaurs swam underwater

Genyornis eggshell recently exposed by wind erosion of sand dune in which it was buried, South Australia. Credit: Gifford Miller

First Australians ate giant eggs of huge flightless birds, ancient proteins...

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