A new genus and species of hadrosaur (duck-billed) dinosaur – the oldest duck-billed dinosaur known from North America – has been named by scientists who expect the discovery to shed new light on dinosaur evolution.

Tyrannosaurus rex was an opportunistic feeder, not a top predator, paleontologists say.

New research is upending more than 100 years of thought regarding the dinosaurs known as Triceratops and Torosaurus.

A journey that started with a box of bird feet carried three Montana State University graduate students into the gruesome world of raptors and led to their findings being published in a prominent journal.

U.S. paleontologists who search for dinosaur fossils in Eastern Montana can now chemically analyze fossils on site the same day they're excavated.