Pachyrhinosaurini

Pachyrhinosaurini was an advanced tribe of the ceratopsid subfamily Centrosaurinae, beside the tenuous Centrosaurini itself. While early members looked like (and were often thought to be) other members of that group, later members had their nose horn slowly changed from a horn into a large, rough, bony pad.

As ceratopsians, all pachyrhinosaurins are Lightning Dinosaurs.

A

• Achelousaurus horneri

E

• Einiosaurus procurvicornis

P

• Pachyrhinosaurus/P. canadensis/P. lakustai/P. perotorum

S

• Stellasaurus ancellae
• Styracosaurus/S. albertensis/S. ovatus(?) (possible ancestor of the group)