Best fossil of a dome-headed dinosaur is unearthed in Mongolia

Pachycephalosaurs, two-legged plant eaters known for their bony dome-shaped skulls, are among the quirkiest dinosaurs known, and also among the least understood. A fossil found peeking out of a cliffside in the Gobi Desert of Mongolia - the oldest and most complete of any dinosaur from this group - is now changing that. Researchers said the fossil represents a juvenile of a previously unknown species they have named Zavacephale rinpoche (pronounced zah-vah-SEF-al-ay rin-POH-shay), dating to about 108 million years ago during the Cretaceous Period. This individual was small and lightly built, with long legs, short arms and small hands - comparable in size overall to a German shepherd. Very little is known about pachycephalosaurs (pak-ee-SEF-al-oh-sors), a group that inhabited Asia...