A 225-million-year-old leg bone from Zambia is helping scientists rethink the size, diversity, and role of early dinosaurs.

This makes it the largest herbivore in its ecosystem at the time it was alive. Reconstruction of Lokiceratops surprised by a crocodilian in the 78-million-year-old swamps of northern Montana, USA.

R esearchers have discovered the UK’s biggest-ever dinosaur trackway site in a quarry in Oxfordshire. They found nearly 200 huge footprints, which date back to around 166 million years ago.

This makes it the largest herbivore in its ecosystem at the time it was alive. Reconstruction of Lokiceratops surprised by a crocodilian in the 78-million-year-old swamps of northern Montana, USA.

MARIBO, Denmark -- A new, giant-horned species of dinosaur was discovered that researchers said is the "largest and most ornate" of its kind ever found, according to a study published Thursday in ...