Scientists have unearthed in Mongolia the oldest and most complete fossil of a pachycephalosaur, a group of dinosaurs known for their dome-shaped skulls, according to a new study published Wednesday
Scientists have unearthed in Mongolia the oldest and most complete fossil of a pachycephalosaur, a group of dinosaurs known for their dome-shaped skulls, according to a new study published Wednesday
SALT LAKE CITY — Hank Woolley was visiting the Natural History Museum of Utah one day when he stumbled across a jar labeled “lizard.” Inside was a 76-million-year-old fossil that






