Researchers in Argentina have discovered remains of a tiny, herbivorous dinosaur with protective spikes, suggesting the group it belongs to lived in a much wider area than originally thought.

Tyrannosaurus rex just got a new friend to join its teeny-tiny arms club. Gualicho shinyae, a newly identified dinosaur, was a distant relative of T-rex and had similarly small forearms and hands ...

Researchers have discovered a new species of feathered but flightless little dinosaur from the Jurassic period. Remains of the tiny beast, dubbed Eosinopteryx brevipenna, found in northeastern ...

The oceans soured into a deadly sulfuric-acid stew after the huge asteroid impact that wiped out the dinosaurs ... the researchers said. The tiny droplets likely stuck to pulverized silicate ...