Foraminacephale

The top of its skull dome is covered in tiny pits called foramina, which give the dinosaur its name.1

Foraminacephale lived about 77 to 73 million years ago during the Late Cretaceous.1

Scientists have found skulls from babies, teenagers, and adults, showing how the dome grew taller and less spongy with age.1

Even the youngest Foraminacephale already had a slightly domed skull, unlike its relative Stegoceras which started flat.1

Micro-CT scans suggest that pachycephalosaurids like Foraminacephale may have head-butted each other.1

The dome of Foraminacephale has a large central lobe and two smaller side lobes at the front.1

Its squamosal bone forms a tall, smooth bar under the dome, lined with six bony bumps.1